Global variable leaks fix. kissjs#21

lib/mongoskin/index.js

@@ -65,7 +65,7 @@ MongoSkin.prototype.pair = function(left, right) {
 
 MongoSkin.prototype.cluster = function() {
   var servers = [];
-  for (i = 0, len = arguments.length; i < len; i++) {
+  for (var i = 0, len = arguments.length; i < len; i++) {
     servers.push(parseServer(arguments[i]));
   }
   return new SkinServer(new ServerCluster(servers));
@@ -83,8 +83,8 @@ MongoSkin.prototype.db = function(serverUrl) {
   var db = new Db(config.database, server, {
     native_parser: BSONNative !== undefined
   });
-  skindb = new SkinDb(db, config.username, config.password);
-  for (i = 0, len = this._preBindArgs.length; i < len; i++) {
+  var skindb = new SkinDb(db, config.username, config.password);
+  for (var i = 0, len = this._preBindArgs.length; i < len; i++) {
     skindb.bind.apply(skindb, this._preBindArgs[i]);
   }
   return skindb;
@@ -112,7 +112,7 @@ MongoSkin.prototype.router = function(select) {
   return new Router(select);
 }
 
-mongoskin = new MongoSkin();
+var mongoskin = new MongoSkin();
 
 /*
  * export Skin classes from ./db ./collection ./cursor ./admin