tidy

OpenRA.FileFormats/Graphics/PngLoader.cs

@@ -97,7 +97,7 @@ namespace OpenRA.FileFormats.Graphics
 
 							case "IEND":
 								{
-									var bits = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height),
+									var bits = bitmap.LockBits(bitmap.Bounds(),
 										ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);
 
 									using (var ns = new MemoryStream(data.ToArray()))

OpenRA.FileFormats/Graphics/ShpReader.cs

@@ -8,7 +8,6 @@
  */
 #endregion
 
-using System.Collections;
 using System.Collections.Generic;
 using System.Drawing;
 using System.IO;