ruby: fix CVE-2017-922{6-9}
CVE-2017-9226 : check too big code point value for single byte
CVE-2017-9227 : access to invalid address by reg->dmin value
CVE-2017-9228 : invalid state(CCS_VALUE) in parse_char_class()
CVE-2017-9229 : access to invalid address by reg->dmax value
(From OE-Core rev:
f15f01edbaa431829a50053d07ed6d6b333584c7)
Signed-off-by: Joe Slater <jslater@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
