(svn r16766) -Codechange: remove station->MarkDirty. It is in all cases meant to only update the sign and not invalidate the widget; the widget would be invalidated by a call before/after the call to MarkDirty or it wouldn't make sense because e.g. the window doesn't exist anymore/yet.

src/station_cmd.cpp

@@ -403,9 +403,9 @@ void UpdateAllStationVirtCoord()
  */
 static void UpdateStationVirtCoordDirty(Station *st)
 {
-	st->MarkDirty();
+	st->sign.MarkDirty();
 	st->UpdateVirtCoord();
-	st->MarkDirty();
+	st->sign.MarkDirty();
 }
 
 /** Get a mask of the cargo types that the station accepts.