protocol/server: Include a check to validate xprt->client

rpc_transport entries(xprt) are added to the conf->xprt_list
during client connection with the server. But the client object is created
and assigned to that transport object only during GF_HANDSK_SETVOLUME. Hence
till that period, there could be xprt entries in the xprt_list without client
associated with it. Added a check to validate the client object during upcall
notify.

This is a backport of the below fix -
http://review.gluster.org/#/c/11411/

BUG: 1236274

Change-Id: I00b9a140d6ee76e44c49146e90c20b3a87dc2de8
Signed-off-by: Soumya Koduri <skoduri@redhat.com>
Reviewed-on: http://review.gluster.org/11411
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeith

0 files changed, 0 insertions, 0 deletions