On platforms where char is signed, like x86, the following is an error
(narrowing conversion):
unsigned char x[] = { '\xc3' };
Change-Id: I495bc19409f348069f5bfffd15518f9ef4e43faf
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>