Fix a collection of minor style violations.

This enables several new StyleCopAnalyzer rules to
be enabled immediately during migration.

OpenRA.Game/WRot.cs

@@ -70,6 +70,7 @@ namespace OpenRA
 			var lsq = x * x + y * y + z * z + w * w;
 
 			// Quaternion components use 10 bits, so there's no risk of overflow
+			#pragma warning disable SA1115 // Allow blank lines to visually separate matrix rows
 			mtx = new Int32Matrix4x4(
 				lsq - 2 * (y * y + z * z),
 				2 * (x * y + z * w),
@@ -90,6 +91,7 @@ namespace OpenRA
 				0,
 				0,
 				lsq);
+			#pragma warning restore SA1115
 		}
 
 		public Int32Matrix4x4 AsMatrix()