svcmgr: don't send reply to one-way txn.

svcmgr currently assumes that all incoming transactions are synchronous
and expecting a reply.  Change the BR_TRANSACTION handling code to not
send a reply to one-way transactions.

Bug: 27111612
Change-Id: If2e56d3eb53b41d059dbe7d5d10e764343c0262c
1 file changed