Deallocate wxThreadSpecificInfo when wxThread ends.

Cleanup wxThreadSpecificInfo after wxThread::Entry returns to be more
memory efficient.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74834 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/thread.cpp

@@ -571,7 +571,7 @@ THREAD_RETVAL wxThreadInternal::DoThreadStart(wxThread *thread)
             return THREAD_ERROR_EXIT;
         }
 
-        rc = wxPtrToUInt(thread->Entry());
+        rc = wxPtrToUInt(thread->CallEntry());
     }
     wxCATCH_ALL( wxTheApp->OnUnhandledException(); )