initialize the list earlier while handling create volume and add brick
initialize the list earlier while handling create volume and add brick

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

BUG: 1726 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1726

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster