update doxygen

diff --git a/src/lib/bio/mem.c b/src/lib/bio/mem.c
index e916be9b9487d777b10e365b4ba278fa9fc794d7..d1e2206d76a01d8ec057bd34709b00aae60f8b01 100644 (file)
--- a/src/lib/bio/mem.c
+++ b/src/lib/bio/mem.c
@@ -653,7 +653,7 @@ static bool fr_bio_mem_buf_alloc(fr_bio_mem_t *my, fr_bio_buf_t *buf, size_t siz
  *
  *  @param ctx         the talloc ctx
  *  @param read_size   size of the read buffer.  Must be 1024..1^20
- *  @param write_size  size of the write buffer.  Must be 1024..1^20
+ *  @param write_size  size of the write buffer.  Can be zero. If non-zero, must be 1024..1^20
  *  @param next                the next bio which will perform the underlying reads and writes.
  *     - NULL on error, memory allocation failed
  *     - !NULL the bio