fix bustage.

widget/src/mac/nsMacWindow.cpp

@@ -55,10 +55,14 @@ const short kWindowMarginWidth = 6;
 const short kDialogTitleBarHeight = 26;
 const short kDialogMarginWidth = 6;
 
-
+#if TARGET_CARBON
+// quickest fix. not sure why this doesn't compile w/out carbon.
 DragTrackingHandlerUPP nsMacWindow::sDragTrackingHandlerUPP = ::NewDragTrackingHandlerProc(DragTrackingHandler);
 DragReceiveHandlerUPP nsMacWindow::sDragReceiveHandlerUPP = ::NewDragReceiveHandlerProc(DragReceiveHandler);
-
+#else
+DragTrackingHandlerUPP nsMacWindow::sDragTrackingHandlerUPP = NULL;
+DragReceiveHandlerUPP nsMacWindow::sDragReceiveHandlerUPP = NULL;
+#endif
 
 //¥¥¥ this should probably go into the drag session as a static
 pascal OSErr