add: case HDR_CSEQ: free(hf->parsed); break;
context: void clean_hdr_field(struct hdr_field* hf){	if (hf->parsed){		switch(hf->type){			case HDR_VIA:				free_via_list(hf->parsed);				break;			default:				LOG(L_CRIT, "BUG: clean_hdr_field: unknown header type %d\n",						hf->type);		}	}}