Ensure getFuncName works when checking methods that shadow Object.prototype.

lodash.js

@@ -4678,7 +4678,7 @@
     function getFuncName(func) {
       var result = (func.name + ''),
           array = realNames[result],
-          length = array ? array.length : 0;
+          length = hasOwnProperty.call(realNames, result) ? array.length : 0;
 
       while (length--) {
         var data = array[length],

test/test.js

@@ -3475,6 +3475,18 @@
       assert.deepEqual(c(3), expected);
       assert.deepEqual(d(), expected);
     });
+
+    QUnit.test('should work when a function name matches function name on Object.prototype', function(assert) {
+      assert.expect(1);
+
+      var curried = _.curry(function hasOwnProperty(a, b, c) {
+        return [a, b, c];
+      });
+
+      var expected = [1, 2, 3];
+
+      assert.deepEqual(curried(1)(2)(3), expected);
+    });
   }());
 
   /*--------------------------------------------------------------------------*/