* config/locale/numpunct_members_gnu.cc
	(numpunct<char, wchar_t>::_M_initialize_numpunct()):
	Fix initialization of _M_grouping for locales which have
	_M_thousands_sep == '\0'(L'\0', respectively).
	* testsuite/22_locale/numpunct_byname.cc (test02): Add test.

From-SVN: r49343