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[TAG 0.72.0.3
Don Stewart <dons@galois.com>**20081011220000] [Fix #1015: Don't free the buffers of regexes who's compile fails.
Ben.Lippmeier@anu.edu.au**20090406053513
 The SunOS 5.10 man page says that if regcomp fails then the regex
 buffer becomes "undefined". Trying to free it causes a segv under 
 x86 and SPARC.
]