krb5 commit: Fix unlikely memory error in krb5_rd_cred

[Greg Hudson]

https://github.com/krb5/krb5/commit/60234f7b4cef58b66e0b2776988dfcf79c0d8bbb
commit 60234f7b4cef58b66e0b2776988dfcf79c0d8bbb
Author: Neng Xue <xnsuda at yahoo.com>
Date:   Wed May 7 14:11:14 2014 -0700

    Fix unlikely memory error in krb5_rd_cred
    
    If an error occurs in the for loop in krb5_rd_cred_basic (which should
    only happen on an ENOMEM), do not leave the caller with a dangling
    reference to the freed credential array.
    
    ticket: 7908 (new)
    target_version: 1.12.2

 src/lib/krb5/krb/rd_cred.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/lib/krb5/krb/rd_cred.c b/src/lib/krb5/krb/rd_cred.c
index 8be7f81..acc05c9 100644
--- a/src/lib/krb5/krb/rd_cred.c
+++ b/src/lib/krb5/krb/rd_cred.c
@@ -170,8 +170,10 @@ krb5_rd_cred_basic(krb5_context context, krb5_data *pcreddata,
     (*pppcreds)[i] = NULL;
 
 cleanup:
-    if (retval)
+    if (retval) {
         krb5_free_tgt_creds(context, *pppcreds);
+        *pppcreds = NULL;
+    }
 
 cleanup_cred:
     krb5_free_cred(context, pcred);