[gtk/nested-popover-menu] warning fixes

[Matthias Clasen <matthiasc src gnome org>]

commit d8980befd546ecb65c70fea8ab452649164ba9f2
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Sep 4 00:11:05 2019 -0400

    warning fixes

 gtk/gtkpopover.c     | 2 +-
 gtk/gtkpopovermenu.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkpopover.c b/gtk/gtkpopover.c
index db23eef002..bc8f0f80fa 100644
--- a/gtk/gtkpopover.c
+++ b/gtk/gtkpopover.c
@@ -370,7 +370,7 @@ close_menu (GtkPopover *popover)
     {
       gtk_popover_popdown (popover);
       if (GTK_IS_POPOVER_MENU (popover))
-        popover = gtk_popover_menu_get_parent_menu (GTK_POPOVER_MENU (popover));
+        popover = (GtkPopover *)gtk_popover_menu_get_parent_menu (GTK_POPOVER_MENU (popover));
       else
         popover = NULL;
     }
diff --git a/gtk/gtkpopovermenu.c b/gtk/gtkpopovermenu.c
index 93a34dd7d3..c4958af1f5 100644
--- a/gtk/gtkpopovermenu.c
+++ b/gtk/gtkpopovermenu.c
@@ -212,7 +212,7 @@ focus_out (GtkEventController *controller,
   if (!contains_focus)
     {
       if (menu->parent_menu &&
-          GTK_POPOVER_MENU (menu->parent_menu)->open_submenu == menu)
+          GTK_POPOVER_MENU (menu->parent_menu)->open_submenu == (GtkWidget*)menu)
         GTK_POPOVER_MENU (menu->parent_menu)->open_submenu = NULL;
       gtk_popover_popdown (GTK_POPOVER (menu));
     }