direct set the buf->get to zero after consume
direct set the buf->get to zero after consume

the handle() had consumed all the read data,
and we don't need to move the leftover data.

Signed-off-by: Lai Jiangshan <b337eedf453972390e4695e362aeea2634ef4e0c@gmail.com>

bergwolf/hyperstart,laijs/hyperstart,gao-feng/hyperstart,gao-feng/hyperstart,laijs/hyperstart,hyperhq/hyperstart,bergwolf/hyperstart,gnawux/hyperstart,gnawux/hyperstart,MarioCarrilloA/hyperstart,gnawux/hyperstart,MarioCarrilloA/hyperstart,MarioCarrilloA/hyperstart,hyperhq/hyperstart