Fix non-lazy methods not executed when used with lazy .first() or .last()

test/test.js

@@ -2390,7 +2390,7 @@
 
       strictEqual(callback('a'), true);
 
-      var fn = function () {},
+      var fn = function() {},
           bound = fn.bind && fn.bind(object);
 
       if (bound) {
@@ -12702,6 +12702,16 @@
         skipTest(2);
       }
     });
+
+    test('should work when in a lazy chain sequence, before `.last`', 1, function() {
+      if (!isNpm) {
+        var actual = _([1, 2, 3]).map().xor([4]).last();
+        strictEqual(actual, 4);
+      }
+      else {
+        skipTest(2);
+      }
+    });
   }(1, 2, 3));
 
   /*--------------------------------------------------------------------------*/