bug in apr_brigade_write?

[Brian Pane]

 APU_DECLARE(apr_status_t) apr_brigade_write(apr_bucket_brigade *b,
                                             apr_brigade_flush flush,
                                             void *ctx,
                                             const char *str, 
apr_size_t nbyte)
 {
     apr_bucket *e = APR_BRIGADE_LAST(b);
     apr_size_t remaining = APR_BUCKET_BUFF_SIZE;
     char *buf = NULL;

     if (!APR_BRIGADE_EMPTY(b) && APR_BUCKET_IS_HEAP(e)) {
         apr_bucket_heap *h = e->data;
         remaining = h->alloc_len - e->length;
         buf = h->base + e->start + e->length;
     }
Shouldn't that be "remaining = h->alloc_len - (e->length + e->start)"?
--Brian