stashing changes crashes gitx

[jspiro]

When I try to stash any changes, with or without a message, GitX crashes.

[yanncoupin]

Same here. Another probably related case was when neither the cancel nor stash button would work.

[jphalip]

I've tracked down this issue to the commit number 65ef3f5, where the conversion to ARC was done.
It's a massive commit and I'm not sure how to debug the problem. @laullon, do you have any thoughts on that? Thanks!

[laullon]

I'll take a look.

[jphalip]

Great, thanks!