[PATCH 9/8] Add more const correctness

---
Should I amend this to the previous commits?

 crypt-gpgme.c       | 18 +++++++++---------
 hcache.c            |  6 +++---
 imap/imap.c         |  6 +++---
 imap/imap_private.h |  2 +-
 imap/util.c         |  2 +-
 sidebar.c           |  4 ++--
 6 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/crypt-gpgme.c b/crypt-gpgme.c
index a64123e3..d4fa2c4e 100644
--- a/crypt-gpgme.c
+++ b/crypt-gpgme.c
@@ -396,7 +396,7 @@ static const char *crypt_fpr(crypt_key_t *k)
 /* Returns the fingerprint if available, otherwise
  * returns the long keyid.
  */
-static const char *crypt_fpr_or_lkeyid(crypt_key_t *k)
+static const char *crypt_fpr_or_lkeyid(const crypt_key_t *k)
 {
   const char *s = "????????????????";
 
@@ -3483,8 +3483,8 @@ static void crypt_entry(char *s, size_t l, MUTTMENU * menu, int num)
 /* Compare two addresses and the keyid to be used for sorting. */
 static int _crypt_compare_address(const void *a, const void *b)
 {
-  crypt_key_t **s = (crypt_key_t **) a;
-  crypt_key_t **t = (crypt_key_t **) b;
+  const crypt_key_t * const *s = (const crypt_key_t * const *) a;
+  const crypt_key_t * const *t = (const crypt_key_t * const *) b;
   int r;
 
   if ((r = mutt_strcasecmp((*s)->uid, (*t)->uid)))
@@ -3503,8 +3503,8 @@ static int crypt_compare_address(const void *a, const void *b)
 /* Compare two key IDs and the addresses to be used for sorting. */
 static int _crypt_compare_keyid(const void *a, const void *b)
 {
-  crypt_key_t **s = (crypt_key_t **) a;
-  crypt_key_t **t = (crypt_key_t **) b;
+  const crypt_key_t * const *s = (const crypt_key_t * const *) a;
+  const crypt_key_t * const *t = (const crypt_key_t * const *) b;
   int r;
 
   if ((r = mutt_strcasecmp(crypt_fpr_or_lkeyid(*s), crypt_fpr_or_lkeyid(*t))))
@@ -3522,8 +3522,8 @@ static int crypt_compare_keyid(const void *a, const void *b)
 /* Compare 2 creation dates and the addresses.  For sorting. */
 static int _crypt_compare_date(const void *a, const void *b)
 {
-  crypt_key_t **s = (crypt_key_t **) a;
-  crypt_key_t **t = (crypt_key_t **) b;
+  const crypt_key_t * const *s = (const crypt_key_t * const *) a;
+  const crypt_key_t * const *t = (const crypt_key_t * const *) b;
   unsigned long ts = 0, tt = 0;
 
   if ((*s)->kobj->subkeys && ((*s)->kobj->subkeys->timestamp > 0))
@@ -3549,8 +3549,8 @@ static int crypt_compare_date(const void *a, const void *b)
    addresses and the key IDs.  For sorting. */
 static int _crypt_compare_trust(const void *a, const void *b)
 {
-  crypt_key_t **s = (crypt_key_t **) a;
-  crypt_key_t **t = (crypt_key_t **) b;
+  const crypt_key_t * const *s = (const crypt_key_t * const *) a;
+  const crypt_key_t * const *t = (const crypt_key_t * const *) b;
   unsigned long ts = 0, tt = 0;
   int r;
 
diff --git a/hcache.c b/hcache.c
index e959e998..22f8bdf4 100644
--- a/hcache.c
+++ b/hcache.c
@@ -588,7 +588,7 @@ crc_matches(const char *d, unsigned int crc)
   if (!d)
     return 0;
 
-  restore_int(&mycrc, (unsigned char *) d, &off);
+  restore_int(&mycrc, (const unsigned char *) d, &off);
 
   return (crc == mycrc);
 }
@@ -1189,12 +1189,12 @@ hcache_open_gdbm(struct header_cache *h, const char *path)
   if (pagesize <= 0)
     pagesize = 16384;
 
-  h->db = gdbm_open((char *) path, pagesize, GDBM_WRCREAT, 00600, NULL);
+  h->db = gdbm_open(path, pagesize, GDBM_WRCREAT, 00600, NULL);
   if (h->db)
     return 0;
 
   /* if rw failed try ro */
-  h->db = gdbm_open((char *) path, pagesize, GDBM_READER, 00600, NULL);
+  h->db = gdbm_open(path, pagesize, GDBM_READER, 00600, NULL);
   if (h->db)
     return 0;
 
diff --git a/imap/imap.c b/imap/imap.c
index 4fe1beed..0ce804e5 100644
--- a/imap/imap.c
+++ b/imap/imap.c
@@ -1160,8 +1160,8 @@ int imap_has_flag(LIST *flag_list, const char *flag)
 
 static int compare_uid(const void *a, const void *b)
 {
-  HEADER **pa = (HEADER **) a;
-  HEADER **pb = (HEADER **) b;
+  const HEADER * const *pa = (const HEADER * const *) a;
+  const HEADER * const *pb = (const HEADER * const *) b;
 
   return mutt_numeric_cmp(HEADER_DATA(*pa)->uid, HEADER_DATA(*pb)->uid);
 }
@@ -2089,7 +2089,7 @@ IMAP_STATUS *imap_mboxcache_get(IMAP_DATA *idata, const char *mbox, int create)
   if (create)
   {
     memset(&scache, 0, sizeof(scache));
-    scache.name = (char*)mbox;
+    scache.name = mbox;
     idata->mboxcache = mutt_add_list_n(idata->mboxcache, &scache,
                                        sizeof(scache));
     status = imap_mboxcache_get(idata, mbox, 0);
diff --git a/imap/imap_private.h b/imap/imap_private.h
index 6e6cd9ac..f417e327 100644
--- a/imap/imap_private.h
+++ b/imap/imap_private.h
@@ -137,7 +137,7 @@ typedef struct
 
 typedef struct
 {
-  char *name;
+  const char *name;
 
   unsigned int messages;
   unsigned int recent;
diff --git a/imap/util.c b/imap/util.c
index bff1e1c6..30dacc5a 100644
--- a/imap/util.c
+++ b/imap/util.c
@@ -884,7 +884,7 @@ void imap_unmunge_mbox_name(IMAP_DATA *idata, char *s)
 int imap_wordcasecmp(const char *a, const char *b)
 {
   char tmp[SHORT_STRING];
-  char *s = (char *)b;
+  const char *s = b;
   int i;
 
   tmp[SHORT_STRING-1] = 0;
diff --git a/sidebar.c b/sidebar.c
index 1db5e05a..5a6b143f 100644
--- a/sidebar.c
+++ b/sidebar.c
@@ -249,8 +249,8 @@ static void make_sidebar_entry(char *buf, unsigned int buflen, int width, const
  */
 static int cb_qsort_sbe(const void *a, const void *b)
 {
-  const SBENTRY *sbe1 = *(const SBENTRY **) a;
-  const SBENTRY *sbe2 = *(const SBENTRY **) b;
+  const SBENTRY *sbe1 = *(const SBENTRY * const *) a;
+  const SBENTRY *sbe2 = *(const SBENTRY * const *) b;
   BUFFY *b1 = sbe1->buffy;
   BUFFY *b2 = sbe2->buffy;
 
-- 
2.51.0