object_key_iter() calls object_key_iter_typed() and then always tries to

dereference the string it returns, even if the call fails. The attached
patch fixes this. 



git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@2944 fd59a12c-fef9-0310-b244-a6a79926bd2f

exec/objdb.c

@@ -1539,8 +1539,10 @@ static int object_key_iter(hdb_handle_t parent_object_handle,
 	char *str;
 	ret = object_key_iter_typed (parent_object_handle,
 		(char**)key_name, value, value_len, &t);
-	str = *key_name;
-	*key_len = strlen(str);
+	if (!ret) {
+		str = *key_name;
+		*key_len = strlen(str);
+	}
 	return ret;
 }