krb5 commit: Ignore bad enctypes in krb5_string_to_keysalts()

https://github.com/krb5/krb5/commit/be5396ada0e8dabd68bd0aceb733cfca39a609bc
commit be5396ada0e8dabd68bd0aceb733cfca39a609bc
Author: Robbie Harwood <[email protected]>
Date:   Wed Jul 15 15:42:20 2020 -0400

    Ignore bad enctypes in krb5_string_to_keysalts()
    
    Fixes a problem where the presence of legacy/unrecognized keysalts in
    supported_enctypes would prevent the kadmin programs from starting.
    
    [[email protected]: ideally we would put a warning in the kadmind log,
    but that is difficult to do when the parsing is done inside a library.
    Even adding a trace log is difficult because the kadm5 str_conv
    functions do not accept contexts.]
    
    ticket: 8929 (new)

 src/lib/kadm5/str_conv.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/lib/kadm5/str_conv.c b/src/lib/kadm5/str_conv.c
index 7cf51d3..7982956 100644
--- a/src/lib/kadm5/str_conv.c
+++ b/src/lib/kadm5/str_conv.c
@@ -340,9 +340,10 @@ krb5_string_to_keysalts(const char *string, const char *tupleseps,
     while ((ksp = strtok_r(p, tseps, &tlasts)) != NULL) {
         /* Pass a null pointer to subsequent calls to strtok_r(). */
         p = NULL;
-        ret = string_to_keysalt(ksp, ksaltseps, &etype, &stype);
-        if (ret)
-            goto cleanup;
+
+        /* Discard unrecognized keysalts. */
+        if (string_to_keysalt(ksp, ksaltseps, &etype, &stype) != 0)
+            continue;
 
         /* Ignore duplicate keysalts if caller asks. */
         if (!dups && krb5_keysalt_is_present(ksalts, nksalts, etype, stype))