Fixed a bug that was causing both apprunner and viewer to segfault on startup in the Motif port. NOT PART OF MAIN BUILD.

widget/src/motif/nsAppShell.cpp

@@ -176,7 +176,7 @@ done:
                 EQueue->GetEventQueueSelectFD(),
                 (XtPointer) XtInputReadMask, 
                 event_processor_callback, 
-                0);
+                EQueue);
 
   XtRealizeWidget(mTopLevel);