[gnome-photos/wip/rishi/dlna-renderer-fixes-00: 6/6] dlna-renderer: Make photos_dlna_renderer_unshare return a value

[Debarshi Ray <debarshir src gnome org>]

commit 1f63166992c79142c40c04ecaed7a5c3d3183bf2
Author: Debarshi Ray <debarshir gnome org>
Date:   Tue Mar 23 23:44:45 2021 +0100

    dlna-renderer: Make photos_dlna_renderer_unshare return a value
    
    The convention for GIO-style asynchronous APIs is to return a value
    that indicates success or failure, and not just the GError.
    
    https://gitlab.gnome.org/GNOME/gnome-photos/-/merge_requests/196

 src/photos-dlna-renderer.c | 9 ++++-----
 src/photos-dlna-renderer.h | 2 +-
 2 files changed, 5 insertions(+), 6 deletions(-)
---
diff --git a/src/photos-dlna-renderer.c b/src/photos-dlna-renderer.c
index 6842245e..2bec7e22 100644
--- a/src/photos-dlna-renderer.c
+++ b/src/photos-dlna-renderer.c
@@ -598,14 +598,14 @@ photos_dlna_renderer_unshare (PhotosDlnaRenderer *self,
 }
 
 
-void
+gboolean
 photos_dlna_renderer_unshare_finish (PhotosDlnaRenderer *self,
                                      GAsyncResult *res,
                                      GError **error)
 {
-  g_return_if_fail (g_task_is_valid (res, self));
+  g_return_val_if_fail (g_task_is_valid (res, self), FALSE);
 
-  g_task_propagate_boolean (G_TASK (res), error);
+  return g_task_propagate_boolean (G_TASK (res), error);
 }
 
 
@@ -625,8 +625,7 @@ photos_dlna_renderer_unshare_all_unshare_cb (GObject *source_object,
   {
     g_autoptr (GError) error = NULL;
 
-    photos_dlna_renderer_unshare_finish (self, res, &error);
-    if (error != NULL)
+    if (!photos_dlna_renderer_unshare_finish (self, res, &error))
       g_warning ("Unable to unshare item: %s", error->message);
   }
 
diff --git a/src/photos-dlna-renderer.h b/src/photos-dlna-renderer.h
index a0f079ba..535856c8 100644
--- a/src/photos-dlna-renderer.h
+++ b/src/photos-dlna-renderer.h
@@ -59,7 +59,7 @@ void                  photos_dlna_renderer_unshare            (PhotosDlnaRendere
                                                                GAsyncReadyCallback  callback,
                                                                gpointer             user_data);
 
-void                  photos_dlna_renderer_unshare_finish     (PhotosDlnaRenderer  *self,
+gboolean              photos_dlna_renderer_unshare_finish     (PhotosDlnaRenderer  *self,
                                                                GAsyncResult        *res,
                                                                GError             **error);