# HG changeset patch
# User John "Elwin" Edwards
# Date 1518141274 18000
# Node ID 5a94c9b3181e537c67b5ee3e07ee57ef21964780
# Parent  317166b49d8a9d1ade3973756ca48d1e56aad94c
UltraRogue: clear the next_obj field when removing items from the floor.

The next_obj field is a pointer which the top item in a stack uses to
keep a list of the other items.  When removing an item from the stack,
rem_obj() failed to set next_obj to NULL, which can cause items in
monster inventory to point to items earlier in the inventory list.
That causes infinite co-recursion when saving or restoring.

diff -r 317166b49d8a -r 5a94c9b3181e urogue/things.c
--- a/urogue/things.c	Thu Feb 08 18:56:15 2018 -0500
+++ b/urogue/things.c	Thu Feb 08 20:54:34 2018 -0500
@@ -292,6 +292,8 @@
 	if (op->next_obj)
             objptr->next_obj->l_prev = NULL;
 
+        objptr->next_obj = NULL;
+
         y = op->o_pos.y;
         x = op->o_pos.x;