Merged revisions 91737 via svnmerge from

Merged revisions 91737 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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r91737 | mmichelson | 2007-12-07 09:39:58 -0600 (Fri, 07 Dec 2007) | 7 lines

Hangups that happen during autoservice were not processed appropriately. This is
because a hangup actually causes a NULL frame to be received, not a hangup frame.
Queueing a hangup if we receive a NULL frame during autoservice corrects this problem

(closes issue #11467, reported  by jmls, patched by me)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@91738 65c4cc65-6c06-0410-ace0-fbb531ad65f3