[GFS2] Shrink gfs2_inode (4) - di_uid/di_gid

Remove duplicate di_uid/di_gid fields in favour of using
inode->i_uid/inode->i_gid instead. This saves 8 bytes.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c
index 5208fa9..935cc9a 100644
--- a/fs/gfs2/eattr.c
+++ b/fs/gfs2/eattr.c
@@ -687,7 +687,7 @@
 	if (error)
 		goto out;
 
-	error = gfs2_quota_check(ip, ip->i_di.di_uid, ip->i_di.di_gid);
+	error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
 	if (error)
 		goto out_gunlock_q;