[pass] Patch: Add spaces as needed when autocompleting (bash)

[Jason A. Donenfeld]

Hey Anas,

I'm starring this email to test out later. I know the bug you're
talking about. I recall when working on the bash completion scripts
that things here were a little bit tricky, so there may wind up being
a reason why those flags aren't used. But hopefully there's not, and
your patch is golden. I'll let you know soon.

Thanks,
Jason