codeblocks crashes when a wxChartCtrl is added with wxSmith

https://bugs.gentoo.org/show_bug.cgi?id=372837
https://developer.berlios.de/bugs/?func=detailbug&bug_id=18182&group_id=5358


--- a/src/plugins/contrib/wxSmithContribItems/wxchart/wxchart-1.0/src/chartwindow.cpp
+++ b/src/plugins/contrib/wxSmithContribItems/wxchart/wxchart-1.0/src/chartwindow.cpp
@@ -156,7 +156,13 @@ void wxChartWindow::DrawHLines(
         }
         
         wxChartSizes *sizes = GetSizes();
-        
+
+	// sizes may be NULL, in this case do nothing 
+	// not sure if this is the right way to do things 
+	//  gw.fossdev@gmail.com 
+	if (!sizes) 
+		return; 
+
         hp->SetPen( *wxBLACK_DASHED_PEN );
         
         double current = lower;
@@ -188,6 +194,10 @@ ChartValue wxChartWindow::GetVirtualWidth() const
     int iNodes = static_cast<int>(ceil( GetVirtualMaxX() ));
     wxChartSizes *sizes = GetSizes();
     
+    /// sizes may be NULL, in this case return a fixes value 
+    if (!sizes) 
+	    return 1; 
+    
     ChartValue x = 0;
 
     for ( int iNode = 0; iNode <= iNodes; ++ iNode )