Fixed remove

Author: andot

lib/server/Service.js

@@ -13,7 +13,7 @@
  *                                                        *
  * Hprose Service for Node.js.                            *
  *                                                        *
- * LastModified: Mar 29, 2018                             *
+ * LastModified: Apr 12, 2018                             *
  * Author: Ma Bingyao <andot@hprose.com>                  *
  *                                                        *
 \**********************************************************/
@@ -519,9 +519,9 @@ function Service() {
     function remove(alias) {
         var name = alias.toLowerCase();
         if (_calls[name]) {
-            var index = _name.indexOf(alias);
+            var index = _names.indexOf(alias);
             if (index >= 0) {
-                _name.splice(index, 1);
+                _names.splice(index, 1);
             }
             delete _calls[name];
         }