krb5: Use right function to free data.

In function create_empty_cred, krb5_creds was aloocated using calloc,
but krb5_free_creds was used to remove this creds in done section.
Therefore clang static analyzer repoted this as warning:
Potential leak of memory pointed to by 'cred'

1 files changed, 2 insertions, 1 deletions

diff --git a/src/providers/krb5/krb5_child.c b/src/providers/krb5/krb5_child.c
index f96bc8aae..bd937e808 100644
--- a/src/providers/krb5/krb5_child.c
+++ b/src/providers/krb5/krb5_child.c
@@ -424,7 +424,8 @@ static krb5_error_code create_empty_cred(krb5_context ctx, krb5_principal princ,
 
 done:
     if (kerr != 0) {
-        krb5_free_creds(ctx, cred);
+        krb5_free_cred_contents(ctx, cred);
+        free(cred);
     } else {
         *_cred = cred;
     }