Merge "Use readUnsignedByte."

                 */

                // The length equals to 3 plus the number of octets in the vendor

                // specific content field. And this is little endian.

                int length = ((dis.readByte() & 0xff) +

                        ((dis.readByte() & 0xff) << 8)) - 3;

                int length = (dis.readUnsignedByte() +

                        (dis.readUnsignedByte() << 8)) - 3;

                int type = dis.readUnsignedByte();

                byte transId = dis.readByte();

                int transId = dis.readUnsignedByte();

                int status = dis.readUnsignedByte();

                if (length < 0) {

                    return null;