[gnome-desktop] bg-slide-show: Fix annotation

[Bastien Nocera <hadess src gnome org>]

commit 21370ffc202ff8ecf56e38f9d3052566026a7ed8
Author: Bastien Nocera <hadess hadess net>
Date:   Sun Jun 26 11:31:23 2016 +0200

    bg-slide-show: Fix annotation
    
    The function doesn't return anything, so there's no return value to
    document.

 libgnome-desktop/gnome-bg-slide-show.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/libgnome-desktop/gnome-bg-slide-show.c b/libgnome-desktop/gnome-bg-slide-show.c
index b425b55..b2c4f9b 100644
--- a/libgnome-desktop/gnome-bg-slide-show.c
+++ b/libgnome-desktop/gnome-bg-slide-show.c
@@ -504,9 +504,7 @@ now (void)
  * @file1: (out) (allow-none) (transfer none): first file in slide
  * @file2: (out) (allow-none) (transfer none): second file in slide
  *
- * Returns the current slides progress
- *
- * Return value: %TRUE if successful
+ * Returns the current slides progress.
  **/
 void
 gnome_bg_slide_show_get_current_slide (GnomeBGSlideShow  *self,