[gtk: 1/2] Fix some nullable return annotations

[Emmanuele Bassi <ebassi src gnome org>]

commit 1e01b9079d5299a86f88377badee8b686ed03a05
Author: Sophie Herold <sophie hemio de>
Date:   Sat Nov 21 16:33:40 2020 +0100

    Fix some nullable return annotations

 gtk/gtkaboutdialog.c      | 2 +-
 gtk/gtkactionable.c       | 2 +-
 gtk/gtkappchooserwidget.c | 2 +-
 gtk/gtkapplication.c      | 4 ++--
 gtk/gtkentry.c            | 2 +-
 gtk/gtklabel.c            | 2 +-
 6 files changed, 7 insertions(+), 7 deletions(-)
---
diff --git a/gtk/gtkaboutdialog.c b/gtk/gtkaboutdialog.c
index 4fde9d2299..745b45ea9b 100644
--- a/gtk/gtkaboutdialog.c
+++ b/gtk/gtkaboutdialog.c
@@ -945,7 +945,7 @@ update_website (GtkAboutDialog *about)
  *
  * Returns the program name displayed in the about dialog.
  *
- * Returns: The program name. The string is owned by the about
+ * Returns: (nullable): The program name. The string is owned by the about
  *  dialog and must not be modified.
  */
 const char *
diff --git a/gtk/gtkactionable.c b/gtk/gtkactionable.c
index 150a91055b..f2a38fe71d 100644
--- a/gtk/gtkactionable.c
+++ b/gtk/gtkactionable.c
@@ -130,7 +130,7 @@ gtk_actionable_set_action_name (GtkActionable *actionable,
  *
  * See gtk_actionable_set_action_target_value() for more information.
  *
- * Returns: (transfer none): the current target value
+ * Returns: (nullable) (transfer none): the current target value
  **/
 GVariant *
 gtk_actionable_get_action_target_value (GtkActionable *actionable)
diff --git a/gtk/gtkappchooserwidget.c b/gtk/gtkappchooserwidget.c
index 7c4da1d85f..65076c3591 100644
--- a/gtk/gtkappchooserwidget.c
+++ b/gtk/gtkappchooserwidget.c
@@ -1369,7 +1369,7 @@ gtk_app_chooser_widget_set_default_text (GtkAppChooserWidget *self,
  * Returns the text that is shown if there are not applications
  * that can handle the content type.
  *
- * Returns: the value of #GtkAppChooserWidget:default-text
+ * Returns: (nullable): the value of #GtkAppChooserWidget:default-text
  */
 const char *
 gtk_app_chooser_widget_get_default_text (GtkAppChooserWidget *self)
diff --git a/gtk/gtkapplication.c b/gtk/gtkapplication.c
index 2806cd7cf4..7b438f1581 100644
--- a/gtk/gtkapplication.c
+++ b/gtk/gtkapplication.c
@@ -888,7 +888,7 @@ gtk_application_set_menubar (GtkApplication *application,
  * Returns the menu model that has been set with
  * gtk_application_set_menubar().
  *
- * Returns: (transfer none): the menubar for windows of @application
+ * Returns: (nullable) (transfer none): the menubar for windows of @application
  */
 GMenuModel *
 gtk_application_get_menubar (GtkApplication *application)
@@ -1174,7 +1174,7 @@ gtk_application_handle_window_map (GtkApplication *application,
  * See [Automatic resources][automatic-resources]
  * for more information.
  *
- * Returns: (transfer none): Gets the menu with the
+ * Returns: (nullable) (transfer none): Gets the menu with the
  *     given id from the automatically loaded resources
  */
 GMenu *
diff --git a/gtk/gtkentry.c b/gtk/gtkentry.c
index b5ebbe2b14..a4cf3b30f8 100644
--- a/gtk/gtkentry.c
+++ b/gtk/gtkentry.c
@@ -3245,7 +3245,7 @@ gtk_entry_set_completion (GtkEntry           *entry,
  *
  * Returns the auxiliary completion object currently in use by @entry.
  *
- * Returns: (transfer none): The auxiliary completion object currently
+ * Returns: (nullable) (transfer none): The auxiliary completion object currently
  *     in use by @entry.
  */
 GtkEntryCompletion *
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 4e17a5ba1b..58c7431814 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -5942,7 +5942,7 @@ gtk_label_set_extra_menu (GtkLabel   *self,
  *
  * Gets the menu model set with gtk_label_set_extra_menu().
  *
- * Returns: (transfer none): (nullable): the menu model
+ * Returns: (transfer none) (nullable): the menu model
  */
 GMenuModel *
 gtk_label_get_extra_menu (GtkLabel *self)