Why would you do this, rather than just delete the code you are removing?
> --- a/drivers/net/ppp/ppp_mppe.c
> +++ b/drivers/net/ppp/ppp_mppe.c
> @@ -521,11 +521,12 @@ mppe_decompress(void *arg, unsigned char
> state->sanity_errors += 100;
> goto sanity_error;
> }
> - if (state->stateful && ((ccount & 0xff) == 0xff) && !flushed) {
> + if (state->stateful && ((ccount & 0xff) == 0xff) && !flushed)
> {/*
> printk(KERN_DEBUG "mppe_decompress[%d]: FLUSHED
> bit not set on "
> "flag packet!\n", state->unit);
> state->sanity_errors += 100;
> - goto sanity_error;
> + goto sanity_error;*/
> + flushed = 1;
> }
