Use Null-Propagation Operator

OpenRA.Mods.Common/Scripting/Global/RadarGlobal.cs

@@ -29,14 +29,7 @@ namespace OpenRA.Mods.Common.Scripting
 		[Desc("Creates a new radar ping that stays for the specified time at the specified WPos.")]
 		public void Ping(Player player, WPos position, Color color, int duration = 30 * 25)
 		{
-			if (radarPings != null)
-			{
-				radarPings.Add(
-					() => player.World.RenderPlayer == player,
-					position,
-					color,
-					duration);
-			}
+			radarPings?.Add(() => player.World.RenderPlayer == player, position, color, duration);
 		}
 	}
 }