Merged revisions 67360 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r67360 | russell | 2007-06-05 11:56:36 -0500 (Tue, 05 Jun 2007) | 5 lines

Fix a problem that showed itself by causing Zap channel names to be completely
bogus on my machine.  ast_safe_string_alloc() was broken.  It called
vsnprintf() on a va_args list twice without re-initializing it.  After the first
usage, va_end() and va_start() must be called again.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@67361 65c4cc65-6c06-0410-ace0-fbb531ad65f3