Fix pasto in regcomp.c

[Paolo Bonzini]

This bug is an obvious pasto in parse_bracket_exp:

$ export LANG=C ; echo test123test | sed -e 's/[[:number:]]//g'
sed: -e expression #1, char 18: Memory exhausted

(of course it should have been [[:digit:]], but the error is weird...).
build_charclass returns REG_ECTYPE in that case, parse_bracket_exp assumes
it can only return REG_ENOSPACE.

The next version of sed, due next week (as soon as the gnu.org guys publish
it), will have a number of interesting XFAILed tests...

Paolo

2003-09-19  Paolo Bonzini  <bonzini@gnu.org>

        * posix/regcomp.c (parse_bracket_exp): fix pasto


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