hush: do not save history on xfunc error, it's unsafe

Also, make second calls to install_special_sighandlers() less haphazard.
It's not a fix for anything, but looking more organized now.

function                                             old     new   delta
fflush_restore_ttypgrp_and__exit                       -      20     +20
restore_ttypgrp_and__exit                             21       -     -21
hush_main                                           1181    1152     -29
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/1 up/down: 20/-50)            Total: -30 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

0 files changed, 0 insertions, 0 deletions