auth/credentials: Add NULL check in free_mccache()

Signed-off-by: Andreas Schneider <[email protected]> Reviewed-by: Stefan Metzmacher <[email protected]>
EdwardBetts · Dec 20, 2016 · c406bf6 · c406bf6
1 parent d1ad71e
commit c406bf6
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/auth/credentials/credentials_krb5.c b/auth/credentials/credentials_krb5.c
@@ -42,7 +42,11 @@ static void cli_credentials_invalidate_client_gss_creds(
 /* Free a memory ccache */
 static int free_mccache(struct ccache_container *ccc)
 {
-	krb5_cc_destroy(ccc->smb_krb5_context->krb5_context, ccc->ccache);
+	if (ccc->ccache != NULL) {
+		krb5_cc_destroy(ccc->smb_krb5_context->krb5_context,
+				ccc->ccache);
+		ccc->ccache = NULL;
+	}
 
 	return 0;
 }