CVE-2017-9727: make bounds check in gx_ttfReader__Read more robust
CVE-2017-9835: bounds check the array allocations methods
CVE-2017-11714: prevent trying to reloc a freed object
(From OE-Core rev: 2eae91f9fa1cfdd3f0e6111956c8f193fd0db69f)
Signed-off-by: Joe Slater <jslater@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>