Image not removed when src set to null

This code in the Flex SDK

```

```

Will blank out the image when the Blank button is pressed and the images's source set to null.

Similar code in RoyaleJS:
```

```

Fails to blank out the image.

There's obviously a few work arounds (i.e. setting visibility) but I've run into issues with slow loading images where the wrong images displayed to the user in an application.

Reproduce the RoyaleJS example in the issue and trace how the Image component handles its src update. The fix is done when setting image.src to null blanks the image and a slow, previously requested image cannot replace the cleared state.

Written by the indexing model from the issue text.