Index: icaltime.c
===================================================================
--- icaltime.c  (revision 928)
+++ icaltime.c  (working copy)
@@ -329,6 +329,7 @@

     if(new_tz == 0){
        icalerror_set_errno(ICAL_NEWFAILED_ERROR);
+        free(old_tz_copy);
        return 0;
     }