Blocked revisions 243244 via svnmerge

........
  r243244 | jpeeler | 2010-01-26 12:07:57 -0600 (Tue, 26 Jan 2010) | 12 lines

  Fix crash resulting from frames with invalid data pointers.

  In ast_frdup the frame data union does not get set to point to malloced memory
  if the datalen is zero, so make sure to handle the same case in ast_frisolate
  appropriately.

  (closes issue #16058)
  Reported by: atis
  Patches:
        bug16058-fix.patch uploaded by jpeeler (license 325)
  Tested by: atis
........

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@243245 65c4cc65-6c06-0410-ace0-fbb531ad65f3