[libslab] Use setpgid() instead of setpgrp() for portability

[Vincent Untz <vuntz src gnome org>]

commit 30614c067ec2187ef60d5efe91adca03e101a705
Author: Alexis Ballier <aballier gentoo org>
Date:   Thu Feb 18 01:21:45 2010 +0100

    Use setpgid() instead of setpgrp() for portability
    
    https://bugzilla.gnome.org/show_bug.cgi?id=569846

 libslab/directory-tile.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libslab/directory-tile.c b/libslab/directory-tile.c
index 6426075..c9d0cf1 100644
--- a/libslab/directory-tile.c
+++ b/libslab/directory-tile.c
@@ -624,7 +624,7 @@ static void
 disown_spawned_child (gpointer user_data)
 {
 	setsid  ();
-	setpgrp ();
+	setpgid (0, 0);
 }
 
 static void