do
if (s->prefix)
void mutt_decoder_pop_to_state (DECODER *d, STATE *s){  char tmp[DECODER_BUFFSIZE];  size_t i, l;    do   {    mutt_decoder_pop (d, tmp, sizeof (tmp), &l);    for (i = 0; i < l; i++)      state_prefix_putc (tmp[i], s);  }  while (l > 0);}