rem: error (xmemcoll_exit_failure, 0,
add: error (exit_failure, 0,
context: xmemcoll (char *s1, size_t s1len, char *s2, size_t s2len){  int diff = memcoll (s1, s1len, s2, s2len);  int collation_errno = errno;  if (collation_errno)    {      error (0, collation_errno, _("string comparison failed"));      error (0, 0, _("Set LC_ALL='C' to work around the problem."));      error (xmemcoll_exit_failure, 0,	     _("The strings compared were %s and %s."),	     quotearg_n_style_mem (0, locale_quoting_style, s1, s1len),	     quotearg_n_style_mem (1, locale_quoting_style, s2, s2len));    }  return diff;}