bdfReadProperties: property count needs range check
Avoid integer overflow or underflow when allocating memory arrays
by multiplying the number of properties reported for a BDF font.
(From OE-Core rev: 0ff9f2bf0e44a7b47a98234a12714c780825e286)
Signed-off-by: Li Zhou <li.zhou@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>