MSDN says that wParam should be masked ... maybe will fix a user reported problem of the screensaver starting

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3651 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/DolphinWX/Src/Frame.cpp

@@ -473,7 +473,7 @@ void CFrame::OnClose(wxCloseEvent& event)
 	switch (nMsg)
 	{
 	case WM_SYSCOMMAND:
-			switch (wParam)
+		switch (wParam & 0xFFF0)
 		{
 		case SC_SCREENSAVE:
 		case SC_MONITORPOWER:
@@ -738,4 +738,3 @@ void CFrame::Update()
 	}
 }
 #endif
-