--- wmgeneral/list.c.orig	Tue May 19 23:13:23 1998
+++ wmgeneral/list.c	Tue Oct 10 21:59:35 2000
@@ -44,8 +44,11 @@ list_cons(void* head, LinkedList* tail)
   LinkedList* cell;
 
   cell = (LinkedList*)malloc(sizeof(LinkedList));
-  cell->head = head;
-  cell->tail = tail;
+  if (cell)
+    {
+      cell->head = head;
+      cell->tail = tail;
+    }
   return cell;
 }
 
@@ -84,6 +87,7 @@ list_nth(int index, LinkedList* list)
 INLINE void
 list_remove_head(LinkedList** list)
 {
+  if (!list) return;
   if (!*list) return;  
   if ((*list)->tail)
     {