Mem leaks in connection with print factory code.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30306 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/appcmn.cpp

@@ -46,6 +46,7 @@
 #include "wx/thread.h"
 #include "wx/utils.h"
 #include "wx/ptr_scpd.h"
+#include "wx/prntbase.h"
 
 #if defined(__WXMSW__) && !defined(__PALMOS__)
   #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
@@ -139,6 +140,8 @@ void wxAppBase::CleanUp()
         // but we want to delete them now
         delete wxTopLevelWindows.GetFirst()->GetData();
     }
+    
+    wxPrintFactory::SetPrintFactory( NULL );
 
     // undo everything we did in Initialize() above
     wxBitmap::CleanUpHandlers();

src/common/cmndata.cpp

@@ -237,7 +237,12 @@ void wxPrintData::operator=(const wxPrintData& data)
     m_bin = data.m_bin;
     m_printMode = data.m_printMode;
     m_filename = data.m_filename;   
-    
+
+    // UnRef old m_nativeData    
+    m_nativeData->m_ref--;
+    if (m_nativeData->m_ref == 0) 
+        delete m_nativeData;
+    // Set Ref new one
     m_nativeData = data.GetNativeData();
     m_nativeData->m_ref++;