--- uip/mhfree.c.orig	Fri Apr 30 14:08:35 1999
+++ uip/mhfree.c	Fri Nov 15 19:11:19 2002
@@ -267,6 +267,7 @@
 	if (ce->ce_unlink)
 	    unlink (ce->ce_file);
 	free (ce->ce_file);
+	ce->ce_file = NULL;
     }
 
     if (toplevel) {