Fix array_sort when array has one value. (CMDHELPER-3113)

Author: PseudoKnight

src/main/java/com/laytonsmith/core/functions/ArrayHandling.java

@@ -1399,6 +1399,9 @@ public Construct exec(Target t, Environment environment, Construct... args) thro
 			CArray ca = (CArray) args[0];
 			CArray.SortType sortType = CArray.SortType.REGULAR;
 			CClosure customSort = null;
+			if(ca.size() <= 1){
+				return ca;
+			}
 			try {
 				if (args.length == 2) {
 					if(args[1] instanceof CClosure){