[gtk: 1/2] Add missing transfer notation for function return types.

[Matthias Clasen <matthiasc src gnome org>]

commit 9e9eae3ad4a46480841cba5bebda78b153240140
Author: Robert Ancell <robert ancell canonical com>
Date:   Mon Jan 13 12:14:08 2020 +1300

    Add missing transfer notation for function return types.

 gtk/gtkbuilderscope.c | 4 ++--
 gtk/gtkdragdest.c     | 2 +-
 gtk/gtkdragsource.c   | 4 ++--
 gtk/gtkpopovermenu.c  | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkbuilderscope.c b/gtk/gtkbuilderscope.c
index 8d08e552a8..18f867a476 100644
--- a/gtk/gtkbuilderscope.c
+++ b/gtk/gtkbuilderscope.c
@@ -412,7 +412,7 @@ gtk_builder_cscope_init (GtkBuilderCScope *self)
  * Calling this function is only necessary if you want to add custom
  * callbacks via gtk_builder_cscope_add_callback_symbol().
  *
- * Returns: a new #GtkBuilderCScope
+ * Returns: (transfer full): a new #GtkBuilderCScope
  **/
 GtkBuilderScope *
 gtk_builder_cscope_new (void)
@@ -502,7 +502,7 @@ gtk_builder_cscope_add_callback_symbols (GtkBuilderCScope *self,
  * Fetches a symbol previously added to @self
  * with gtk_builder_cscope_add_callback_symbol().
  *
- * Returns: (nullable): The callback symbol in @builder for @callback_name, or %NULL
+ * Returns: (nullable) (transfer none): The callback symbol in @builder for @callback_name, or %NULL
  */
 GCallback
 gtk_builder_cscope_lookup_callback_symbol (GtkBuilderCScope *self,
diff --git a/gtk/gtkdragdest.c b/gtk/gtkdragdest.c
index a7f32bc1c0..b93296f43b 100644
--- a/gtk/gtkdragdest.c
+++ b/gtk/gtkdragdest.c
@@ -514,7 +514,7 @@ gtk_drag_dest_hierarchy_changed (GtkWidget  *widget,
  *
  * Returns the underlying #GtkDrop object for an ongoing drag.
  *
- * Returns: (nullable): the #GtkDrop of the current drag operation, or %NULL
+ * Returns: (nullable) (transfer none): the #GtkDrop of the current drag operation, or %NULL
  */
 GdkDrop *
 gtk_drop_target_get_drop (GtkDropTarget *dest)
diff --git a/gtk/gtkdragsource.c b/gtk/gtkdragsource.c
index ffa82273d6..3ef11dc7e6 100644
--- a/gtk/gtkdragsource.c
+++ b/gtk/gtkdragsource.c
@@ -518,7 +518,7 @@ gtk_drag_source_new (void)
  *
  * Gets the current content provider of a #GtkDragSource.
  *
- * Returns: the #GtkContentProvider of @source
+ * Returns: (transfer none): the #GtkContentProvider of @source
  */
 GdkContentProvider *
 gtk_drag_source_get_content (GtkDragSource *source)
@@ -640,7 +640,7 @@ gtk_drag_source_set_icon (GtkDragSource *source,
  *
  * Returns the underlying #GtkDrag object for an ongoing drag.
  *
- * Returns: (nullable): the #GdkDrag of the current drag operation, or %NULL
+ * Returns: (nullable) (transfer none): the #GdkDrag of the current drag operation, or %NULL
  */
 GdkDrag *
 gtk_drag_source_get_drag (GtkDragSource *source)
diff --git a/gtk/gtkpopovermenu.c b/gtk/gtkpopovermenu.c
index 06f24532e8..0765c9dd3d 100644
--- a/gtk/gtkpopovermenu.c
+++ b/gtk/gtkpopovermenu.c
@@ -633,7 +633,7 @@ gtk_popover_menu_set_menu_model (GtkPopoverMenu *popover,
  *
  * Returns the menu model used to populate the popover.
  *
- * Returns: the menu model of @popover
+ * Returns: (transfer none): the menu model of @popover
  */
 GMenuModel *
 gtk_popover_menu_get_menu_model (GtkPopoverMenu *popover)