Renames some variables.

modules/RTC/JitsiLocalTrack.js

             this.dontFireRemoveEvent = false;
         }.bind(this));
     this.initialMSID = this.getMSID();
-    this.inMuteOrUnmuteProcess = false;
+    this.inMuteOrUnmuteProgress = false;
 }
 
 JitsiLocalTrack.prototype = Object.create(JitsiTrack.prototype);
 {
     return new Promise(function (resolve, reject) {
 
-        if(this.inMuteOrUnmuteProcess) {
+        if(this.inMuteOrUnmuteProgress) {
             reject(new Error(JitsiTrackErrors.TRACK_MUTE_UNMUTE_IN_PROGRESS));
             return;
         }
-        this.inMuteOrUnmuteProcess = true;
+        this.inMuteOrUnmuteProgress = true;
 
         this._setMute(mute,
             function(){
-                this.inMuteOrUnmuteProcess = false;
+                this.inMuteOrUnmuteProgress = false;
                 resolve();
             }.bind(this),
             function(status){
-                this.inMuteOrUnmuteProcess = false;
+                this.inMuteOrUnmuteProgress = false;
                 reject(status);
             }.bind(this));
     }.bind(track));

modules/RTC/RTC.js

  * @returns {Promise}
  */
 RTC.prototype.setAudioMute = function (value) {
-    var mutes = [];
+    var mutePromises = [];
     for(var i = 0; i < this.localStreams.length; i++) {
         var stream = this.localStreams[i];
         if(stream.getType() !== "audio") {
             continue;
         }
         // this is a Promise
-        mutes.push(stream.mute(value));
+        mutePromises.push(stream.mute(value));
     }
     // we return a Promise from all Promises so we can wait for their execution
-    return Promise.all(mutes);
+    return Promise.all(mutePromises);
 }
 
 RTC.prototype.removeLocalStream = function (stream) {