Added definition for turbo_websocket_mask.
Added definition for turbo_websocket_mask.

zcsteele/turbo,zcsteele/turbo,YuanPeir-Chen/turbo-support-mipsel,YuanPeir-Chen/turbo-support-mipsel,luastoned/turbo,kernelsauce/turbo,luastoned/turbo,mniestroj/turbo,ddysher/turbo,ddysher/turbo