[aravis] viewer: warning fix after buffer->data type change.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit f74574a4be6b1affeb29cabe062c7c0e011cc4c2
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Tue Nov 5 08:47:15 2013 +0100

    viewer: warning fix after buffer->data type change.

 viewer/arvviewer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/viewer/arvviewer.c b/viewer/arvviewer.c
index 81efc80..1fb0f88 100644
--- a/viewer/arvviewer.c
+++ b/viewer/arvviewer.c
@@ -177,7 +177,7 @@ arv_viewer_new_buffer_cb (ArvStream *stream, ArvViewer *viewer)
                        GST_BUFFER_MALLOCDATA (buffer) = data;
                        GST_BUFFER_SIZE (buffer) = size;
                } else {
-                       GST_BUFFER_DATA (buffer) = arv_buffer->data;
+                       GST_BUFFER_DATA (buffer) = (unsigned char *) arv_buffer->data;
                        GST_BUFFER_MALLOCDATA (buffer) = NULL;
                        GST_BUFFER_SIZE (buffer) = arv_buffer->size;
                }