Merged revisions 176216 via svnmerge from

Merged revisions 176216 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r176216 | kpfleming | 2009-02-16 15:10:38 -0600 (Mon, 16 Feb 2009) | 3 lines

  fix a flaw in the ast_string_field_build() family of API calls; these functions made no attempt to reuse the space already allocated to a field, so every time the field was written it would allocate new space, leading to what appeared to be a memory leak.
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  r176254 | kpfleming | 2009-02-16 15:41:46 -0600 (Mon, 16 Feb 2009) | 3 lines

  correct a logic error in the last stringfields commit... don't mark additional space as allocated if the string was built using already-allocated space
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@176255 65c4cc65-6c06-0410-ace0-fbb531ad65f3