Cancel load event on a failed image resource fetch.

Source/core/loader/ImageLoader.cpp

Index: Source/core/loader/ImageLoader.cpp
diff --git a/Source/core/loader/ImageLoader.cpp b/Source/core/loader/ImageLoader.cpp
index a8177ba48d59bf7fe79cc7d41c22cdbe68588f9c..8659c5ad118de1f2e5344eb2615a7ea8b9740f65 100644
--- a/Source/core/loader/ImageLoader.cpp
+++ b/Source/core/loader/ImageLoader.cpp
@@ -291,7 +291,18 @@ void ImageLoader::notifyFinished(Resource* resource)
         updatedHasPendingEvent();
         return;
     }
+    if (resource->errorOccurred()) {
+        loadEventSender().cancelEvent(this);
+        m_hasPendingLoadEvent = false;
+
+        m_hasPendingErrorEvent = true;
+        errorEventSender().dispatchEventSoon(this);
 
+        // Only consider updating the protection ref-count of the Element immediately before returning
+        // from this function as doing so might result in the destruction of this ImageLoader.
+        updatedHasPendingEvent();
+        return;
+    }
     loadEventSender().dispatchEventSoon(this);
 }