Motd's protocol should be i32

[theaddonn]

The Motd struct represents the protocol version as an u16, but the protocol version (for mcbe at least) is always represented as an i32.
(I don't know why it is a signed integer, lets hope protocol version -42 is planned)

Due to the raknet docs not defining the motd and mojang rather doing their own stuff in this area, this is a bug of consistency.

[john-bv]

A u16 was used here cause theoretically the number only goes up and will never exceed 65535 versions, but I guess we could change this for the sake of consistency.

[theaddonn]

this is rather "for the sake of consistency" like you mentioned. And I am certainly sure we will get protocol version -42 one day