watch: ensure SIGCHLD works in forked children

In case our git or spam checker subprocesses spawn
subprocesses of their own.  We'll also ensure signal
handlers are properly setup before unblocking them.

diff --git a/lib/PublicInbox/WatchMaildir.pm b/lib/PublicInbox/WatchMaildir.pm
index 25b87e938e051dd82877066ec1d7e676ed8427d4..288f64d1e6c23e1fd53dfbf1d094dff5379f734e 100644 (file)
--- a/lib/PublicInbox/WatchMaildir.pm
+++ b/lib/PublicInbox/WatchMaildir.pm
@@ -527,8 +527,8 @@ sub watch_atfork_child ($) {
        delete $self->{poll_pids};
        delete $self->{opendirs};
        PublicInbox::DS->Reset;
+       %SIG = (%SIG, %{$self->{sig}}, CHLD => 'DEFAULT');
        PublicInbox::Sigfd::sig_setmask($self->{oldset});
-       %SIG = (%SIG, %{$self->{sig}});
 }
 
 sub watch_atfork_parent ($) {