Fix Not Storing Current Incoming Recv Address

In 1.8, r384779 introduced a regression by retrieving an old dialog and keeping
the old recv address since recv was already set.  This has caused a problem when
a proxy is involved since responses to incoming requests from the proxy server,
after an outbound call is established, are never sent to the correct recv
address.

In 11, r382322 introduced this regression.

The fix is to revert that change and always store the recv address on incoming
requests.

(closes issue ASTERISK-22071)
Reported by: Alex Zarubin
Tested by: Alex Zarubin, Karsten Wemheuer
Patches:
    asterisk-22071-store-recvd-address.diff by Michael L. Young (license 5026)


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/1.8@397204 f38db490-d61c-443f-a65b-d21fe96a405b