Use a TextTrackLoaderClient reference (not pointer)

Source/core/html/track/LoadableTextTrack.cpp

Index: Source/core/html/track/LoadableTextTrack.cpp
diff --git a/Source/core/html/track/LoadableTextTrack.cpp b/Source/core/html/track/LoadableTextTrack.cpp
index 9baa66dce9b71832c0171fe87900b2888baa226d..87c34f362b780176827d5e5a80b12cdc0d63d0b3 100644
--- a/Source/core/html/track/LoadableTextTrack.cpp
+++ b/Source/core/html/track/LoadableTextTrack.cpp
@@ -88,7 +88,7 @@ void LoadableTextTrack::loadTimerFired(Timer<LoadableTextTrack>*)
     // 4. Download: If URL is not the empty string, perform a potentially CORS-enabled fetch of URL, with the
     // mode being the state of the media element's crossorigin content attribute, the origin being the
     // origin of the media element's Document, and the default origin behaviour set to fail.
-    m_loader = TextTrackLoader::create(this, m_trackElement->document());
+    m_loader = TextTrackLoader::create(*this, m_trackElement->document());
     if (!m_loader->load(m_url, m_trackElement->mediaElementCrossOriginAttribute()))
         m_trackElement->didCompleteLoad(this, HTMLTrackElement::Failure);
 }