Merge branch 'master' into jgrpp

# Conflicts:
#	src/blitter/32bpp_anim.cpp
#	src/blitter/32bpp_anim.hpp
#	src/blitter/32bpp_anim_sse2.cpp
#	src/blitter/32bpp_base.cpp
#	src/blitter/32bpp_base.hpp
#	src/ground_vehicle.cpp
#	src/linkgraph/linkgraph_gui.h
#	src/main_gui.cpp
#	src/newgrf_house.cpp
#	src/newgrf_house.h
#	src/town_cmd.cpp
#	src/vehicle_base.h
#	src/viewport_gui.cppp

src/disaster_vehicle.cpp

@@ -165,7 +165,7 @@ DisasterVehicle::DisasterVehicle(int x, int y, Direction direction, DisasterSubT
 	this->direction = direction;
 	this->tile = TileVirtXY(x, y);
 	this->subtype = subtype;
-	this->UpdateDeltaXY(INVALID_DIR);
+	this->UpdateDeltaXY();
 	this->owner = OWNER_NONE;
 	this->image_override = 0;
 	this->current_order.Free();
@@ -978,7 +978,7 @@ void ReleaseDisastersTargetingVehicle(VehicleID vehicle)
 	}
 }
 
-void DisasterVehicle::UpdateDeltaXY(Direction direction)
+void DisasterVehicle::UpdateDeltaXY()
 {
 	this->x_offs        = -1;
 	this->y_offs        = -1;