Renames a variable.

modules/RTC/JitsiLocalTrack.js

 var JitsiTrack = require("./JitsiTrack");
 var RTCBrowserType = require("./RTCBrowserType");
 var JitsiTrackEvents = require('../../JitsiTrackEvents');
-var RTC = require("./RTCUtils");
+var RTCUtils = require("./RTCUtils");
 
 /**
  * Represents a single media track (either audio or video).
         if (mute) {
             this.dontFireRemoveEvent = true;
             this.rtc.room.removeStream(this.stream, function () {});
-            RTC.stopMediaStream(this.stream);
+            RTCUtils.stopMediaStream(this.stream);
             if(isAudio)
                 this.rtc.room.setAudioMute(mute);
             else
             //FIXME: Maybe here we should set the SRC for the containers to something
         } else {
             var self = this;
-            RTC.obtainAudioAndVideoPermissions({
+            RTCUtils.obtainAudioAndVideoPermissions({
                 devices: (isAudio ? ["audio"] : ["video"]),
                 resolution: self.resolution})
                 .then(function (streams) {
 
                     for(var i = 0; i < self.containers.length; i++)
                     {
-                        RTC.attachMediaStream(self.containers[i], self.stream);
+                        RTCUtils.attachMediaStream(
+                            self.containers[i], self.stream);
                     }
 
                     self.rtc.room.addStream(stream.stream,
         return;
     if(this.rtc)
         this.rtc.room.removeStream(this.stream, function () {});
-    RTC.stopMediaStream(this.stream);
+    RTCUtils.stopMediaStream(this.stream);
     this.detach();
 }