C89 defines memcpy as taking a const void *, so casting from
const unsigned char * to char * simply angers gcc for no benefit:

KeyBind.c:1017:24: warning: cast discards '__attribute__((const))' qualifier from pointer target type [-Wcast-qual]
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>