Blocked revisions 238492 via svnmerge

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  r238492 | dvossel | 2010-01-07 14:42:27 -0600 (Thu, 07 Jan 2010) | 14 lines

  fixes ast_transfer stall until hangup if called with a channel that doesn't support transfers

  ast_transfer sets res to 0 if there is no technology transfer function,
  but then tests for it to be negative before deciding to do an early exit.
  As a result, it will will wait for an AST_CONTROL_TRANSFER message that
  will never come.

  (closes issue #16424)
  Reported by: davidw
  Patches:
        Issue_16424_trunk_234134.patch uploaded by davidw (license 780)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@238493 65c4cc65-6c06-0410-ace0-fbb531ad65f3