We assume already that our X implementation is POSIX compliant anyway. So
remove those redundant checking.
SA_SIGINFO is left there.
Signed-off-by: Tiago Vignatti <tiago.vignatti@nokia.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>