Fix mistake from last commit

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4973 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_PadSimple/Src/PadSimple.cpp

@@ -488,7 +488,7 @@ void X11_Read(int _numPAD, SPADStatus* _pPADStatus)
 			break;
 		case ConfigureNotify:
 		case ClientMessage:
-			XPutBackEvent(WMdisplay, &E);
+			XPutBackEvent(GXdsp, &E);
 			break;
 		default:
 			break;