do not access the empty loc inode
do not access the empty loc inode

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

BUG: 2611 ([glusterfs-3.1.0-qa5]: crash in quota_rename)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2611

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster