Use expression body syntax

OpenRA.Game/TraitDictionary.cs

@@ -208,8 +208,8 @@ namespace OpenRA
 
 				public void Reset() { index = actors.BinarySearchMany(actor) - 1; }
 				public bool MoveNext() { return ++index < actors.Count && actors[index].ActorID == actor; }
-				public T Current { get { return traits[index]; } }
-				object System.Collections.IEnumerator.Current { get { return Current; } }
+				public T Current => traits[index];
+				object System.Collections.IEnumerator.Current => Current;
 				public void Dispose() { }
 			}
 
@@ -272,8 +272,8 @@ namespace OpenRA
 
 				public void Reset() { index = -1; }
 				public bool MoveNext() { return ++index < actors.Count; }
-				public TraitPair<T> Current { get { return new TraitPair<T>(actors[index], traits[index]); } }
-				object System.Collections.IEnumerator.Current { get { return Current; } }
+				public TraitPair<T> Current => new TraitPair<T>(actors[index], traits[index]);
+				object System.Collections.IEnumerator.Current => Current;
 				public void Dispose() { }
 			}