Fix old V8 JIT bug that has cropped up again.

lodash.src.js

@@ -1016,6 +1016,7 @@
 
     (function(x) {
       var Ctor = function() { this.x = x; },
+          args = arguments,
           object = { '0': x, 'length': x },
           props = [];
 
@@ -1029,7 +1030,7 @@
        * @memberOf _.support
        * @type boolean
        */
-      support.argsTag = objToString.call(arguments) == argsTag;
+      support.argsTag = objToString.call(args) == argsTag;
 
       /**
        * Detect if `name` or `message` properties of `Error.prototype` are
@@ -1158,7 +1159,7 @@
        * @type boolean
        */
       try {
-        support.nonEnumArgs = !propertyIsEnumerable.call(arguments, 1);
+        support.nonEnumArgs = !propertyIsEnumerable.call(args, 1);
       } catch(e) {
         support.nonEnumArgs = true;
       }

test/test.js

@@ -8973,7 +8973,7 @@
     });
 
     test('`_.' + methodName + '` should work with `arguments` objects (test in IE < 9)', 1, function() {
-      if (!(isPhantom || isStrict)) {
+      if (!isStrict) {
         deepEqual(func(args).sort(), ['0', '1', '2']);
       }
       else {
@@ -8982,7 +8982,7 @@
     });
 
     test('`_.' + methodName + '` should return keys for custom properties on `arguments` objects', 1, function() {
-      if (!(isPhantom || isStrict)) {
+      if (!isStrict) {
         args.a = 1;
         deepEqual(func(args).sort(), ['0', '1', '2', 'a']);
         delete args.a;
@@ -8993,7 +8993,7 @@
     });
 
     test('`_.' + methodName + '` should ' + (isKeys ? 'not' : '') + ' include inherited properties of `arguments` objects', 1, function() {
-      if (!(isPhantom || isStrict)) {
+      if (!isStrict) {
         var expected = isKeys ? ['0', '1', '2'] : ['0', '1', '2', 'a'];
 
         objectProto.a = 1;