dix: count must be 1 if we have an XI2 match.

This fixes events that activated a grab not getting delivered to the client.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

dix/events.c

@@ -3420,6 +3420,7 @@ CheckPassiveGrabsOnWindow(
                            "(%d, %d).\n", device->name, event->type, rc);
                     continue;
                 }
+                count = 1;
             } else
             {
                 rc = EventToXI((InternalEvent*)event, &xE, &count);