Remove redundant call to closeMediaSource() in userCancelledLoad()

Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 3025 matching lines @@
 
     if (m_networkState == NETWORK_EMPTY || m_completelyLoaded || m_isFinalizing)
         return;
 
     // 2 - Set the error attribute to a new MediaError object whose code attribute is set to MEDIA_ERR_ABORTED.
     m_error = MediaError::create(MediaError::MEDIA_ERR_ABORTED);
 
     // 3 - Queue a task to fire a simple event named error at the media element.
     scheduleEvent(EventTypeNames::abort);
 
-    closeMediaSource();
-
     // 4 - If the media element's readyState attribute has a value equal to HAVE_NOTHING, set the
     // element's networkState attribute to the NETWORK_EMPTY value and queue a task to fire a
     // simple event named emptied at the element. Otherwise, set the element's networkState
     // attribute to the NETWORK_IDLE value.
     if (m_readyState == HAVE_NOTHING) {
         m_networkState = NETWORK_EMPTY;
         scheduleEvent(EventTypeNames::emptied);
     } else {
         m_networkState = NETWORK_IDLE;
     }
@@ skipping 731 matching lines @@
     visitor->trace(m_client);
 }
 
 DEFINE_TRACE(HTMLMediaElement::AudioSourceProviderImpl)
 {
     visitor->trace(m_client);
 }
 #endif
 
 }