Update documentation of filter_pre_select().

diff --git a/filter_chain.c b/filter_chain.c
index 798d58e..737eaa5 100644 (file)
--- a/filter_chain.c
+++ b/filter_chain.c
@@ -101,9 +101,7 @@ static void call_callbacks(struct filter_node *fn, char *inbuf, size_t inlen,
  * callbacks are called.  Similarly, if a convert function produced output, all
  * registerd output callbacks get called.
  *
- * \return The sum of output bytes produced by the convert functions on
- * success, negative return value on errors (the return value is stored in
- * t->ret).
+ * On errors a (negative) error code is stored in t->error.
  *
  * \sa filter_node, filter#convert, filter_callback
  */