srd: Constify lots more parameters.

1 files changed, 2 insertions, 2 deletions

diff --git a/decoder.c b/decoder.c
index 4d886c7..f620c1e 100644
--- a/decoder.c
+++ b/decoder.c
@@ -290,9 +290,9 @@ err_out:
  * @param dec The loaded protocol decoder.
  *
  * @return A newly allocated buffer containing the protocol decoder's
- *         documentation. The caller is responsible for free'ing this after use.
+ *         documentation. The caller is responsible for free'ing the buffer.
  */
-SRD_API char *srd_decoder_doc(struct srd_decoder *dec)
+SRD_API char *srd_decoder_doc(const struct srd_decoder *dec)
 {
 	PyObject *py_str;
 	char *doc;