fix case block indentation for emacs24 (cc-mode 5.32.2) or higher

In emacs24, case block indentation is bloken like a following:

    switch (x) {
    case 'foo':
    println('bar')
    }

This issue seems to be occured by `\r\n` in `c-stmt-delim-chars` and `c-stmt-delim-chars-with-comma`.

In emacs24, c-stmt-delim-chars and c-stmt-delim-chars-with-comma are not
needed for vsemi (cc-awk is not set these).