ensure if cond expr is surrounded by brackets

hscript/Parser.hx

@@ -434,7 +434,9 @@ class Parser {
 		#end
 		return switch( id ) {
 		case "if":
+			ensure(TPOpen);
 			var cond = parseExpr();
+			ensure(TPClose);
 			var e1 = parseExpr();
 			var e2 = null;
 			var semic = false;