Modify add_item_to_tree to return immediately on a null tree ptr.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@131 f5534014-38df-0310-8fa8-9805f1628bb7

1 files changed, 4 insertions, 1 deletions

diff --git a/packet.c b/packet.c
index 7e67701fb0..801e46a1c1 100644
--- a/packet.c
+++ b/packet.c
@@ -1,7 +1,7 @@
 /* packet.c
  * Routines for packet disassembly
  *
- * $Id: packet.c,v 1.13 1998/12/04 05:59:13 guy Exp $
+ * $Id: packet.c,v 1.14 1998/12/21 03:39:27 gerald Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -156,6 +156,9 @@ add_item_to_tree(GtkWidget *tree, gint start, gint len,
   va_list    ap;
   gchar      label_str[256];
   
+  if (!tree)
+    return(NULL);
+  
   va_start(ap, format);
   vsnprintf(label_str, 256, format, ap);
   ti = gtk_tree_item_new_with_label(label_str);