Check XMLHttpRequest status before loading image.
Check XMLHttpRequest status before loading image.

On the server onload is called (not onerror), so we must check the status to see
if the image was actually found.

smpcole/asoiaf-vs-tac,smpcole/asoiaf-vs-tac,smpcole/theoriginalgot,smpcole/theoriginalgot,smpcole/theoriginalgot,smpcole/asoiaf-vs-tac,smpcole/asoiaf-vs-tac,smpcole/theoriginalgot