access-control : remove spurious error message from the posix_setxattr_cbk

A check for dictionary is required before calling handling_other_acl_related_xattr()
in posix_setxattr_cbk(). Otherwise following message will be poped up on every settxattr
call.

[2016-01-31 17:38:48.027792] I [dict.c:473:dict_get]
 (-->/usr/lib/x86_64-linux-gnu/glusterfs/3.7.6/xlator/system/posix-acl.so
(posix_acl_setxattr_cbk+0x26) [0x7f2334c5c166] -->
/usr/lib/x86_64-linux-gnu/glusterfs/3.7.6/xlator/system/posix-acl.so
(handling_other_acl_related_xattr+0xb0) [0x7f2334c5c0f0]
-->/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(dict_get+0x93)
[0x7f233c04b0c3] ) 0-dict: !this ||
key=system.posix_acl_default [Invalid argument]

Upstream reference :
>Change-Id: I93f7e0f764c94dce38bdde95a68341f69a52122d
>BUG: 1303501
>Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com>
>Reviewed-on: http://review.gluster.org/13325
>Smoke: Gluster Build System <jenkins@build.gluster.com>
>Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
>CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
>NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
>Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
>(cherry picked from commit b72172f4516ff5627f15168213a54b171463803f)

BUG: 1308800
Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com>
Change-Id: Ide2aea41c01c00bf28294fd3ea4f1d538f54b26f
Reviewed-on: http://review.gluster.org/13452
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>

0 files changed, 0 insertions, 0 deletions