--- rxvt-unicode/src/salloc.C	2004/05/09 18:19:49	1.7
+++ rxvt-unicode/src/salloc.C	2005/12/18 00:59:42	1.8
@@ -89,6 +89,9 @@
 void
 rxvt_salloc::free (void *data)
 {
+  if (!data)
+    return;
+
   chain *line = (chain *)data;
   line->next = firstline;
   firstline = line;