Fix for crash on quit w.r.t any web worker still running during quit. ( ...

appshell/cef_main_window.cpp

@@ -220,13 +220,6 @@ BOOL cef_main_window::HandleGetMinMaxInfo(LPMINMAXINFO mmi)
     return TRUE;
 }
 
-// WM_DESTROY handler
-BOOL cef_main_window::HandleDestroy()
-{
-    ::PostQuitMessage(0);
-    return TRUE;
-}
-
 // WM_CLOSE handler
 BOOL cef_main_window::HandleClose()
 {
@@ -505,8 +498,7 @@ LRESULT cef_main_window::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
             return 0L;
         break;
     case WM_DESTROY:
-        if (HandleDestroy())
-            return 0L;
+        return 0L; // Do not handle the destroy here.
         break;
     case WM_CLOSE:
         if (HandleClose())

appshell/cef_main_window.h

@@ -52,7 +52,6 @@ class cef_main_window : public cef_host_window
     BOOL HandleEraseBackground(HDC hdc);
     BOOL HandleCreate();
     BOOL HandleSetFocus(HWND hLosingFocus);
-    BOOL HandleDestroy();
     BOOL HandleClose();
     BOOL HandleInitMenuPopup(HMENU hMenuPopup);
     BOOL HandleCommand(UINT commandId);

appshell/client_handler.cpp

@@ -188,7 +188,12 @@ void ClientHandler::OnBeforeClose(CefRefPtr<CefBrowser> browser) {
   }
 
   if (m_quitting) {
-    DispatchCloseToNextBrowser();
+    // Changed the logic to call CefQuitMesaageLoop()
+    // for windows as it was crashing with 2171 CEF.
+    if (HasWindows())
+      DispatchCloseToNextBrowser();
+    else
+      CefQuitMessageLoop();
   }
 }