rootston: Reap child processes
rootston: Reap child processes

Just install a SIG_IGN handler, which is defined by POSIX.1-2001 to
reap the child.

To test, spawn any process (e.g. GUI application) with a keybinding,
close that process, verify it doesn't show up as a <defunct> zombie in
ps(1) output.

ascent12/wlroots,swaywm/wlroots,swaywm/wlroots,SirCmpwn/wlroots,ascent12/wlroots