Correct fix to the compile time assert under OW. Kudos to Vadim to the tip.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30030 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/thread.cpp

@@ -144,6 +144,9 @@ static bool gs_waitingForThread = false;
 
 wxCriticalSection::wxCriticalSection()
 {
+    wxCOMPILE_TIME_ASSERT( sizeof(CRITICAL_SECTION) <= sizeof(wxCritSectBuffer),
+                           wxCriticalSectionBufferTooSmall );
+
     ::InitializeCriticalSection((CRITICAL_SECTION *)m_buffer);
 }