Fix RCS1077

OpenRA.Mods.Common/Scripting/Properties/PlayerConditionProperties.cs

@@ -9,6 +9,7 @@
  */
 #endregion
 
+using System;
 using System.Linq;
 using Eluant;
 using OpenRA.Mods.Common.Traits;
@@ -32,8 +33,7 @@ namespace OpenRA.Mods.Common.Scripting
 			"If duration > 0 the condition will be automatically revoked after the defined number of ticks.")]
 		public int GrantCondition(string condition, int duration = 0)
 		{
-			var external = externalConditions
-				.FirstOrDefault(t => t.Info.Condition == condition && t.CanGrantCondition(this));
+			var external = Array.Find(externalConditions, t => t.Info.Condition == condition && t.CanGrantCondition(this));
 
 			if (external == null)
 				throw new LuaException($"Condition `{condition}` has not been listed on an enabled ExternalCondition trait");