Fixed wxTabFrame leak by deleting all pages in the dtor (fixes bug [ 1774394 ] wxAuiNotebook::AddPage Memory Leak)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@48251 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/aui/auibook.cpp

@@ -2879,6 +2879,9 @@ void wxAuiNotebook::InitNotebook(long style)
 
 wxAuiNotebook::~wxAuiNotebook()
 {
+    while ( GetPageCount() > 0 )
+        DeletePage(0);
+
     m_mgr.UnInit();
 }