check dict before unrefing it
check dict before unrefing it

Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com>
Signed-off-by: Vijay Bellur <vijay@gluster.com>

BUG: 2642 ([glusterfs-3.2.0qa5]: invalid reads in glusterd)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2642

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster