Network - Problem with bad height or bad rendering after use portal in first multiplayer level

[turican0]

[turican0]

Tested in DOSBOX and in that is game ok.

[turican0]

At now fixed:

typedef struct {
uint16_t x;
uint16_t y;
int16_t z;
}axis_3d;

If it was a problem would want to go back and fix it here:

sub_5D530

x_WORD_EB398ar.z -= 51;