krb5 commit: Fix garbage return in extract_cammacs()

https://github.com/krb5/krb5/commit/8b3384c4bb91031a8cc648ecef2b20b8a4480e73
commit 8b3384c4bb91031a8cc648ecef2b20b8a4480e73
Author: Robbie Harwood <[email protected]>
Date:   Mon Jun 18 17:49:52 2018 -0400

    Fix garbage return in extract_cammacs()
    
    If no cammacs were present, we would never initialize ret before
    returning it.  (extract_cammcs() is currently never called with an
    empty or null list, so this does not manifest as a bug.)
    
    [[email protected]: amended commit message]

 src/lib/krb5/krb/authdata.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/lib/krb5/krb/authdata.c b/src/lib/krb5/krb/authdata.c
index 8fd1f05..7fbcfab 100644
--- a/src/lib/krb5/krb/authdata.c
+++ b/src/lib/krb5/krb/authdata.c
@@ -546,7 +546,7 @@ static krb5_error_code
 extract_cammacs(krb5_context kcontext, krb5_authdata **cammacs,
                 const krb5_keyblock *key, krb5_authdata ***ad_out)
 {
-    krb5_error_code ret;
+    krb5_error_code ret = 0;
     krb5_authdata **list = NULL, **elements = NULL, **new_list;
     size_t i, n_elements, count = 0;