Fix a typo in function names

JitsiConference.js

@@ -120,7 +120,8 @@ JitsiConference.prototype.leave = function () {
     ).then(this._leaveRoomAndRemoveParticipants.bind(this))
     .catch(function (error) {
         logger.error(error);
-        GlobalOnErrorHandler.callUnhandlerRejectionHandler({promise: this, reason: error});
+        GlobalOnErrorHandler.callUnhandledRejectionHandler(
+            {promise: this, reason: error});
         // We are proceeding with leaving the conference because room.leave may
         // succeed.
         this._leaveRoomAndRemoveParticipants();

modules/RTC/RTCUtils.js

@@ -569,7 +569,7 @@ function wrapAttachMediaStream(origAttachMediaStream) {
             stream.getAudioTracks && stream.getAudioTracks().length) {
             element.setSinkId(RTCUtils.getAudioOutputDevice())
                 .catch(function (ex) {
-                    GlobalOnErrorHandler.callUnhandlerRejectionHandler(
+                    GlobalOnErrorHandler.callUnhandledRejectionHandler(
                         {promise: this, reason: ex});
                     logger.error('Failed to set audio output on element',
                         element, ex);

modules/util/GlobalOnErrorHandler.js

@@ -34,7 +34,7 @@ var oldOnUnhandledRejection = window.onunhandledrejection;
  * all handlers that were previously added. This handler handles rejected
  * Promises.
  */
-function JitsiGlobalUnhandlerRejection(event) {
+function JitsiGlobalUnhandledRejection(event) {
     handlers.forEach(function (handler) {
         handler(null, null, null, null, event.reason);
     });
@@ -44,7 +44,7 @@ function JitsiGlobalUnhandlerRejection(event) {
 
 //Setting the custom error handlers.
 window.onerror = JitsiGlobalErrorHandler;
-window.onunhandledrejection = JitsiGlobalUnhandlerRejection;
+window.onunhandledrejection = JitsiGlobalUnhandledRejection;
 
 
 var GlobalOnErrorHandler = {
@@ -70,7 +70,7 @@ var GlobalOnErrorHandler = {
      * @param error the error that is going to be passed to the rejection
      * handler.
      */
-    callUnhandlerRejectionHandler: function (error) {
+    callUnhandledRejectionHandler: function (error) {
         var errHandler = window.onunhandledrejection;
         if(!errHandler)
             return;