Fix IDE0038

OpenRA.Game/WAngle.cs

@@ -44,7 +44,7 @@ namespace OpenRA
 		public override int GetHashCode() { return Angle.GetHashCode(); }
 
 		public bool Equals(WAngle other) { return other == this; }
-		public override bool Equals(object obj) { return obj is WAngle && Equals((WAngle)obj); }
+		public override bool Equals(object obj) { return obj is WAngle angle && Equals(angle); }
 
 		public int Facing => Angle / 4;