Ensure that wxApp::Yield is always processing pending event by creating a

temporary event loop if needed.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@53607 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/app.cpp

@@ -702,6 +702,7 @@ bool wxApp::Yield(bool onlyIfNeeded)
 
     // we don't want to process WM_QUIT from here - it should be processed in
     // the main event loop in order to stop it
+    wxEventLoopGuarantor dummyLoopIfNeeded;
     MSG msg;
     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
             msg.message != WM_QUIT )