more linting

lib/streams/RollingFileStream.js

@@ -1,8 +1,9 @@
-var BaseRollingFileStream = require('./BaseRollingFileStream'),
+"use strict";
-    util = require('util'),
+var BaseRollingFileStream = require('./BaseRollingFileStream')
-    path = require('path'),
+, util = require('util')
-    fs = require('fs'),
+, path = require('path')
-    async = require('async');
+, fs = require('fs')
+, async = require('async');
 
 var debug;
 if (process.env.NODE_DEBUG && /\blog4js\b/.test(process.env.NODE_DEBUG)) {