[libgnome-volume-control] Fix unused GIR transfer notation on integer values

[Robert Ancell <rancell src gnome org>]

commit 9a2996b3626713df80e62b42721f94a5e20e2958
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Dec 6 13:48:49 2017 +1300

    Fix unused GIR transfer notation on integer values

 gvc-mixer-stream.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gvc-mixer-stream.c b/gvc-mixer-stream.c
index afe4d31..076b505 100644
--- a/gvc-mixer-stream.c
+++ b/gvc-mixer-stream.c
@@ -158,7 +158,7 @@ gvc_mixer_stream_get_channel_map (GvcMixerStream *stream)
  * gvc_mixer_stream_get_volume:
  * @stream:
  *
- * Returns: (type guint32) (transfer none):
+ * Returns: (type guint32):
  */
 pa_volume_t
 gvc_mixer_stream_get_volume (GvcMixerStream *stream)
@@ -486,7 +486,7 @@ gvc_mixer_stream_set_sysfs_path (GvcMixerStream *stream,
  * gvc_mixer_stream_get_base_volume:
  * @stream:
  *
- * Returns: (type guint32) (transfer none):
+ * Returns: (type guint32):
  */
 pa_volume_t
 gvc_mixer_stream_get_base_volume (GvcMixerStream *stream)