Fixed Batch update threads - select all in safari crashes

[Razasharp]

When clicking select all in the batch updates section, Safari hangs and you have to restart Safari as the tab won't close or respond. (OS X Mavericks)

I noticed that when selecting 'all prefixes' there was a quite a delay as well, fairly sure it only started after 1.3 beta.

 

[Mike]

It looks like there's actually an infinite loop here in certain scenarios. I'm surprised it works at all.

Fixed now though, thanks.