Fix up selection constructor return types

Follow the pattern we use for the other list model
types, and return the exact type.

gtk/gtkmultiselection.c

@@ -317,7 +317,7 @@ gtk_multi_selection_init (GtkMultiSelection *self)
  *
  * Returns: (transfer full) (type GtkMultiSelection): a new #GtkMultiSelection
  **/
-GListModel *
+GtkMultiSelection *
 gtk_multi_selection_new (GListModel *model)
 {
   g_return_val_if_fail (G_IS_LIST_MODEL (model), NULL);

gtk/gtkmultiselection.h

@@ -30,7 +30,7 @@ GDK_AVAILABLE_IN_ALL
 G_DECLARE_FINAL_TYPE (GtkMultiSelection, gtk_multi_selection, GTK, MULTI_SELECTION, GObject)
 
 GDK_AVAILABLE_IN_ALL
-GListModel *    gtk_multi_selection_new                (GListModel           *model);
+GtkMultiSelection *    gtk_multi_selection_new                (GListModel           *model);
 
 G_END_DECLS
 

gtk/gtknoselection.c

@@ -205,7 +205,7 @@ gtk_no_selection_init (GtkNoSelection *self)
  *
  * Returns: (transfer full) (type GtkNoSelection): a new #GtkNoSelection
  **/
-GListModel *
+GtkNoSelection *
 gtk_no_selection_new (GListModel *model)
 {
   g_return_val_if_fail (G_IS_LIST_MODEL (model), NULL);

gtk/gtknoselection.h

@@ -30,7 +30,7 @@ GDK_AVAILABLE_IN_ALL
 G_DECLARE_FINAL_TYPE (GtkNoSelection, gtk_no_selection, GTK, NO_SELECTION, GObject)
 
 GDK_AVAILABLE_IN_ALL
-GListModel * gtk_no_selection_new (GListModel *model);
+GtkNoSelection * gtk_no_selection_new (GListModel *model);
 
 G_END_DECLS
 

gtk/gtksingleselection.c

@@ -403,7 +403,7 @@ gtk_single_selection_init (GtkSingleSelection *self)
  *
  * Returns: (transfer full) (type GtkSingleSelection): a new #GtkSingleSelection
  **/
-GListModel *
+GtkSingleSelection *
 gtk_single_selection_new (GListModel *model)
 {
   g_return_val_if_fail (G_IS_LIST_MODEL (model), NULL);

gtk/gtksingleselection.h

@@ -42,7 +42,7 @@ GDK_AVAILABLE_IN_ALL
 G_DECLARE_FINAL_TYPE (GtkSingleSelection, gtk_single_selection, GTK, SINGLE_SELECTION, GObject)
 
 GDK_AVAILABLE_IN_ALL
-GListModel *    gtk_single_selection_new                (GListModel             *model);
+GtkSingleSelection * gtk_single_selection_new                (GListModel             *model);
 
 GDK_AVAILABLE_IN_ALL
 guint           gtk_single_selection_get_selected       (GtkSingleSelection     *self);