urlmon: Return failures from progress callback

[Jacek Caban]

  Hi Juan,

On 8/4/10 11:44 PM, Juan Lang wrote:
> Partial fix for bug 21032.
> --Juan

      if(!This->callback)
-        return;
+        return E_POINTER;


This doesn't seem right. It's fine to call URLDownloadToFile without 
callback AFAIR.


Thanks,
     Jacek