Returns nullptr in getImageSourceForCanvas when imageSnapshot is null

Source/core/html/HTMLCanvasElement.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. 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.
@@ skipping 720 matching lines @@
         *status = InvalidSourceImageStatus;
         return nullptr;
     }
 
     if (m_context && m_context->is3d()) {
         m_context->paintRenderingResultsToCanvas();
         *status = ExternalSourceImageStatus;
 
         // can't create SkImage from WebGLImageBufferSurface (contains only SkBitmap)
         return m_imageBuffer->copyImage(DontCopyBackingStore, Unscaled);
-    } else {
-        *status = NormalSourceImageStatus;
     }
 
-    return StaticBitmapImage::create(m_imageBuffer->newImageSnapshot());
+    RefPtr<SkImage> image = m_imageBuffer->newImageSnapshot();
+    if (image) {
+        *status = NormalSourceImageStatus;
+
+        return StaticBitmapImage::create(image.release());
+    }
+
+
+    *status = InvalidSourceImageStatus;
+
+    return nullptr;
 }
 
 bool HTMLCanvasElement::wouldTaintOrigin(SecurityOrigin*) const
 {
     return !originClean();
 }
 
 FloatSize HTMLCanvasElement::sourceSize() const
 {
     return FloatSize(width(), height());
 }
 
 }