After roam synch indication is received, the driver compares the
SSID of the current AP and SSID of the roamed AP. If there is a
mismatch, driver issues disassociate to current connected AP.
This causes data path queues to be stopped and M2 to the roamed
AP from userspace will fail. The SSID of the current AP is
parsed from the beacon IEs stored in the connected bss
description. In hidden ssid case the SSID IE has 0 length
and the host receives unicast probe with SSID of the
AP in the roam synch indication. So SSID mismatch happens
and validation fails.
Check if the current SSID in the bss description is NULL.
If its NULL, get the SSID from the connected profile in csr
session.
Change-Id: I30c41b821c0fc506d763eb33f8bb706dd26b405a
CRs-Fixed: 2544915
483d70b71b