Blocked revisions 294163 via svnmerge

Blocked revisions 294163 via svnmerge

This is not needed in 1.6.2 as dialogs are reference counted.

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  r294163 | mnicholson | 2010-11-08 12:59:20 -0600 (Mon, 08 Nov 2010) | 6 lines

  Modify our handling of 491 responses to drop any pending reinvite retry scheduler entries if we get a new 491.

  This prevents a scheduler entry from leaking if we receive a 491 response when one is pending.  If a scheduler entry leaks, the pvt it is associated my get destroyed before the scheduler entry fires, and then memory corruption and crashes can occur when the scheduled reinvite attempts to access and modify the memory of the destroyed pvt.

  ABE-2543
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@294209 65c4cc65-6c06-0410-ace0-fbb531ad65f3