[Asterisk-code-review] res_pjsip_refer: Fix issue with transfer target being left on hold. (asterisk[16])

[Ben Smithurst]

Attention is currently required from: Joshua Colp, Ben Smithurst.
Hello Sean Bright, Friendly Automation, 

I'd like you to reexamine a change. Please visit

    https://gerrit.asterisk.org/c/asterisk/+/16042

to look at the new patch set (#3).

Change subject: res_pjsip_refer: Fix issue with transfer target being left on hold.
......................................................................

res_pjsip_refer: Fix issue with transfer target being left on hold.

This fixes a problem with attended remote transfers, where the phone
puts the target on hold immediately before sending REFER to another
server, when the calls are on different servers.  When the REFER is
routed across to the other server using an external_replaces hook,
which generates an INVITE packet with a Replaces header, the on
hold call is now removed from hold again and the transfer continues
normally.

ASTERISK-29469

Change-Id: Ibfe359c5ce0338b2df9d1b2347bc684d4a21461a
---
M res/res_pjsip_refer.c
1 file changed, 3 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/42/16042/3
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Gerrit-Project: asterisk
Gerrit-Branch: 16
Gerrit-Change-Id: Ibfe359c5ce0338b2df9d1b2347bc684d4a21461a
Gerrit-Change-Number: 16042
Gerrit-PatchSet: 3
Gerrit-Owner: Ben Smithurst <ben.smithurst at gradwell.com>
Gerrit-Reviewer: Friendly Automation
Gerrit-Reviewer: Sean Bright <sean at seanbright.com>
Gerrit-Attention: Joshua Colp <jcolp at sangoma.com>
Gerrit-Attention: Ben Smithurst <ben.smithurst at gradwell.com>
Gerrit-MessageType: newpatchset
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