Replace for(;;) with while (true).

OpenRA.Mods.Common/EditorBrushes/EditorTileBrush.cs

@@ -167,7 +167,7 @@ namespace OpenRA.Mods.Common.Widgets
 
 			Func<CPos, CVec, CPos> findEdge = (refCell, direction) =>
 			{
-				for (;;)
+				while (true)
 				{
 					var newCell = refCell + direction;
 					if (!shouldPaint(newCell))

OpenRA.Mods.Common/Util.cs

@@ -164,7 +164,7 @@ namespace OpenRA.Mods.Common
 
 		public static IEnumerable<CPos> RandomWalk(CPos p, MersenneTwister r)
 		{
-			for (;;)
+			while (true)
 			{
 				var dx = r.Next(-1, 2);
 				var dy = r.Next(-1, 2);

OpenRA.Mods.Common/Widgets/ColorMixerWidget.cs

@@ -109,7 +109,7 @@ namespace OpenRA.Mods.Common.Widgets
 			lock (syncWorker)
 				workerAlive = true;
 
-			for (;;)
+			while (true)
 			{
 				float hue;
 				lock (syncWorker)