--- rxvt-unicode/src/salloc.C	2004/05/09 18:19:49	1.7
+++ rxvt-unicode/src/salloc.C	2011/02/21 07:41:03	1.11
@@ -1,9 +1,9 @@
-/*--------------------------------*-C-*---------------------------------*
+/*----------------------------------------------------------------------*
  * File:	salloc.C
  *----------------------------------------------------------------------*
  *
  * All portions of code are copyright by their respective author/s.
- * Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com>
+ * Copyright (c) 2003-2006 Marc Lehmann <schmorp@schmorp.de>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -89,6 +89,9 @@
 void
 rxvt_salloc::free (void *data)
 {
+  if (!data)
+    return;
+
   chain *line = (chain *)data;
   line->next = firstline;
   firstline = line;