After upgrading org-mode recently, I find that hitting "q" for
(org-agenda-quit) while viewing an agenda kills the buffer that was active
when I created the agenda.

I'm on org-mode v8.3.2. To reproduce:

   - Activate a buffer, call it =active_buf.txt=
   - C-c a for (org-agenda)
   - a for "Agenda for current week or day"
   - q for (org-agenda-quit)

I find that =active_buf.txt= has now been killed.

Same thing happens with "x" for (org-agenda-exit). Also happens after
completely doing away with my init.el, so I don't believe this is the
result of a setting.

What is going on?

Alan