cmd_ipc4: fix comments and formatting

diff --git a/lib/PublicInbox/CmdIPC4.pm b/lib/PublicInbox/CmdIPC4.pm
index c244f6a1a7c7c2d177498c2f275cda55e9cb7842..74dbf8a12ee4a8090a16d75a8ddbcaee6271cf3b 100644 (file)
--- a/lib/PublicInbox/CmdIPC4.pm
+++ b/lib/PublicInbox/CmdIPC4.pm
@@ -3,7 +3,7 @@
 
 # callers should use PublicInbox::CmdIPC4->can('send_cmd4') (or recv_cmd4)
 # first choice for script/lei front-end and 2nd choice for lei backend
-# libsocket-msghdr-perl is in Debian but many other distros as of 2021.
+# libsocket-msghdr-perl is in Debian but not many other distros as of 2021.
 package PublicInbox::CmdIPC4;
 use strict;
 use v5.10.1;
@@ -12,12 +12,11 @@ BEGIN { eval {
 require Socket::MsgHdr; # XS
 no warnings 'once';
 
-# 3 FDs per-sendmsg(2) + buffer
+# any number of FDs per-sendmsg(2) + buffer
 *send_cmd4 = sub ($$$$) { # (sock, fds, buf, flags) = @_;
        my ($sock, $fds, undef, $flags) = @_;
        my $mh = Socket::MsgHdr->new(buf => $_[2]);
-       $mh->cmsghdr(SOL_SOCKET, SCM_RIGHTS,
-                       pack('i' x scalar(@$fds), @$fds));
+       $mh->cmsghdr(SOL_SOCKET, SCM_RIGHTS, pack('i' x scalar(@$fds), @$fds));
        Socket::MsgHdr::sendmsg($sock, $mh, $flags);
 };