Completion of error handling about x11fs HOT 4 OPEN

@sdhand, there are two distinct types of calls that we can make for any server request - in general a checked and unchecked type. https://xcb.freedesktop.org/manual/structxcb__generic__error__t.html and, it seems that we aren't doing very much on the event loop. So, I'm wondering if you would prefer we swap over to all of our calls being checked calls, so that we can immediately handle errors should they arise with the use of a follow up call - or if you'd like to just use a pass/fail approach to a call and lose the ability to narrow down errors?

from x11fs.

Thanks very much for pointing this out, will fix shortly.

from x11fs.

Actually, a large number of functions used are capable of failing, and there is little code in-place to handle it. I'll be more than happy to help you out with this if you would like.

from x11fs.

Save for event, naturally

from x11fs.