change assert to not assume a sorted list of arguments indices for Bugzilla 1159

test/suite/ch15/15.2/15.2.3/15.2.3.14/15.2.3.14-3-4.js

@@ -12,19 +12,19 @@ function testcase() {
   function testArgs2(x, y, z) {
     // Properties of the arguments object are enumerable.
     var a = Object.keys(arguments);
-    if (a.length === 2 && a[0] === "0" && a[1] === "1")
+    if (a.length === 2 && a[0] in arguments && a[1] in arguments)
       return true;
   }
   function testArgs3(x, y, z) {
     // Properties of the arguments object are enumerable.
     var a = Object.keys(arguments);
-    if (a.length === 3 && a[0] === "0" && a[1] === "1" && a[2] === "2")
+    if (a.length === 3 && a[0] in arguments && a[1] in arguments && a[2] in arguments)
       return true;
   }
   function testArgs4(x, y, z) {
     // Properties of the arguments object are enumerable.
     var a = Object.keys(arguments);
-    if (a.length === 4 && a[0] === "0" && a[1] === "1" && a[2] === "2" && a[3] === "3")
+    if (a.length === 4 && a[0] in arguments && a[1] in arguments && a[2] in arguments && a[3] in arguments)
       return true;
   }
   return testArgs2(1, 2) && testArgs3(1, 2, 3) && testArgs4(1, 2, 3, 4);