[gtk/matthiasc/for-master: 2/2] droptarget: Fix confusion around ::leave signal

[Matthias Clasen <matthiasc src gnome org>]

commit d06cdf63185ba586b8bd90b8b241f6d3ea9f1b46
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri May 8 08:47:06 2020 -0400

    droptarget: Fix confusion around ::leave signal
    
    The leave signal should not take any arguments,
    don't pass the GdkDrop. Update the documentation,
    fix the emission and update users to match.
    
    This was showing up as crash when dragging files
    over the places sidebar.

 gtk/gtkdroptarget.c    | 3 +--
 gtk/gtkplacessidebar.c | 1 -
 2 files changed, 1 insertion(+), 3 deletions(-)
---
diff --git a/gtk/gtkdroptarget.c b/gtk/gtkdroptarget.c
index dac70c7da5..ad38fc683b 100644
--- a/gtk/gtkdroptarget.c
+++ b/gtk/gtkdroptarget.c
@@ -471,7 +471,7 @@ gtk_drop_target_handle_crossing (GtkEventController    *controller,
           crossing->new_target == widget)
         return;
 
-      g_signal_emit (self, signals[LEAVE], 0, self->drop);
+      g_signal_emit (self, signals[LEAVE], 0);
       if (!self->dropping)
         gtk_drop_target_end_drop (self);
       gtk_widget_unset_state_flags (widget, GTK_STATE_FLAG_DROP_ACTIVE);
@@ -731,7 +731,6 @@ gtk_drop_target_class_init (GtkDropTargetClass *class)
   /**
    * GtkDropTarget::leave:
    * @self: the #GtkDropTarget
-   * @drop: the #GdkDrop
    *
    * The ::leave signal is emitted on the drop site when the pointer
    * leaves the widget. Its main purpose it to undo things done in
diff --git a/gtk/gtkplacessidebar.c b/gtk/gtkplacessidebar.c
index 178c3bde66..06712a79e2 100644
--- a/gtk/gtkplacessidebar.c
+++ b/gtk/gtkplacessidebar.c
@@ -1912,7 +1912,6 @@ dnd_finished_cb (GdkDrag          *drag,
  */
 static void
 drag_leave_callback (GtkDropTarget *dest,
-                     GdkDrop       *drop,
                      gpointer       user_data)
 {
   GtkPlacesSidebar *sidebar = GTK_PLACES_SIDEBAR (user_data);