Merge branch 'master' into jgrpp

# Conflicts:
#	src/debug.cpp
#	src/saveload/afterload.cpp
#	src/saveload/saveload.cpp
#	src/settings_type.h
#	src/town_cmd.cpp
#	src/window.cpp

src/pathfinder/follow_track.hpp

@@ -221,8 +221,7 @@ protected:
 		}
 
 		/* normal or station tile, do one step */
-		TileIndexDiff diff = TileOffsByDiagDir(m_exitdir);
-		m_new_tile = TILE_ADD(m_old_tile, diff);
+		m_new_tile = TileAddByDiagDir(m_old_tile, m_exitdir);
 
 		/* special handling for stations */
 		if (IsRailTT() && HasStationTileRail(m_new_tile)) {