From 5b6b792cd49d65536ee282ebeaac850ac64f12f9 Mon Sep 17 00:00:00 2001
From: treectrl <treectrl>
Date: Sat, 28 Oct 2006 01:21:51 +0000
Subject: Fixed a bug with dynamic-option code incrementing the refcount of a
 NULL Tcl_Object.

---
 generic/tkTreeUtils.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/generic/tkTreeUtils.c b/generic/tkTreeUtils.c
index 235714b..4c962ad 100644
--- a/generic/tkTreeUtils.c
+++ b/generic/tkTreeUtils.c
@@ -5,7 +5,7 @@
  *
  * Copyright (c) 2002-2006 Tim Baker
  *
- * RCS: @(#) $Id: tkTreeUtils.c,v 1.45 2006/10/26 03:00:32 treectrl Exp $
+ * RCS: @(#) $Id: tkTreeUtils.c,v 1.46 2006/10/28 01:21:51 treectrl Exp $
  */
 
 #include "tkTreeCtrl.h"
@@ -5059,7 +5059,8 @@ dbwin("DynamicCO_Set id=%d saveInternalPtr=%p save=%p\n", cd->id, saveInternalPt
 dbwin("saving object '%s'\n", *value ? Tcl_GetString(*value) : "NULL");
 #endif
 	*objPtrPtr = *value;
-	Tcl_IncrRefCount(*value);
+	if (*value != NULL)
+	    Tcl_IncrRefCount(*value);
     }
 
     *(DynamicCOSave **) saveInternalPtr = save;
-- 
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