Merged revisions 163171 via svnmerge from

Merged revisions 163171 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

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r163171 | russell | 2008-12-11 14:07:47 -0600 (Thu, 11 Dec 2008) | 16 lines

Fix the "failed" extension for outgoing calls.

The conversion to use ast_check_hangup() everywhere instead of checking the softhangup
flag directly introduced this problem.  The issue is that ast_check_hangup() checked
for tech_pvt to be NULL.  Unfortunately, this will be NULL is some valid circumstances,
such as with a dummy channel.

The fix is simple.  Don't check tech_pvt.  It's pointless, because the code path that
sets this to NULL is when the channel hangup callback gets called.  This happens inside
of ast_hangup(), which is the same function responsible for freeing the channel.  Any
code calling ast_check_hangup() better not be calling it after that point, and if so,
we have a bigger problem at hand.

(closes issue #14035)
Reported by: erogoza

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