Fix blind transfers from failing if an 'h' extension is present.
This prevents the 'h' extension from being run on the transferee
channel when it is transferred via a native transfer mechanism such
as SIP REFER.
(closes ASTERISK-19173)
Reported by: Ross Beer
Tested by: Kristjan Vrban
Patches:
ASTERISK-19173 by Mark Michelson (license 5049)
Review: https://reviewboard.asterisk.org/r/1685
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Merged revisions 352199 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 352228 from http://svn.asterisk.org/svn/asterisk/branches/10
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@352229
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