GMod CUserCmd Padding

int command_number; // 4 bytes
int tick_count; // 4 bytes
QAngle  viewangles; // 12 bytes
float   forwardmove; // 4 bytes
float   sidemove; // 4 bytes
float   upmove; // 4 bytes
int buttons; // 4 bytes
byte    impulse; // 1 byte
int weaponselect; // 4 bytes
int weaponsubtype; // 4 bytes
int random_seed; // 4 bytes
short   mousedx; // 2 bytes
short   mousedy; // 2 bytes
bool    hasbeenpredicted; // 1 byte

CUtlVector< CEntityGroundContact > entitygroundcontact; // 20 bytes

char pad84[12]; // 12 bytes
char pad96[12]; // 12 bytes
char pad108[16]; // 16 bytes
char pad124[4]; // 4 bytes - I have no idea what this is

// include this at the end of GetChecksum
CRC32_ProcessBuffer( &crc, &pad84, sizeof( pad84 ) );
CRC32_ProcessBuffer( &crc, &pad96, sizeof( pad96 ) );
CRC32_ProcessBuffer( &crc, &pad108, sizeof( pad108 ) );