if (option (OPTSIGNALSBLOCKED))
if (option (OPTSYSSIGNALSBLOCKED))
void mutt_unblock_signals_system (int catch){  struct sigaction sa;  if (option (OPTSIGNALSBLOCKED))  {    sa.sa_flags = 0;    sa.sa_handler = mutt_exit_handler;    sigaction (SIGQUIT, &sa, NULL);    if (catch)      sa.sa_handler = sighandler;    sigaction (SIGINT, &sa, NULL);    sigprocmask (SIG_UNBLOCK, &Sigset, NULL);    unset_option (OPTSIGNALSBLOCKED);  }}