(svn r21929) -Fix [FS#4554]: The town window would not be invalidated in the scenario editor if the ground changed and thus the required cargos for town growth

src/terraform_gui.cpp

@@ -59,6 +59,7 @@ static void GenerateDesertArea(TileIndex end, TileIndex start)
 		MarkTileDirtyByTile(tile);
 	}
 	_generating_world = false;
+	InvalidateWindowClassesData(WC_TOWN_VIEW, 0);
 }
 
 /** Scenario editor command that generates rocky areas */

src/town_gui.cpp

@@ -525,7 +525,7 @@ public:
 
 	virtual void OnInvalidateData(int data = 0)
 	{
-		/* Called when setting station noise have changed, in order to resize the window */
+		/* Called when setting station noise or required cargos have changed, in order to resize the window */
 		this->SetDirty(); // refresh display for current size. This will allow to avoid glitches when downgrading
 		this->ResizeWindowAsNeeded();
 	}