[libadwaita/libadwaita-1-0] view-switcher-bar: Fix a leak

[Alexander Mikhaylenko <alexm src gnome org>]

commit 88986ff7de4ed2e2f3bd4a00f5fc8d9ae0a17ada
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Feb 14 15:01:20 2022 +0500

    view-switcher-bar: Fix a leak
    
    
    (cherry picked from commit fb348da4e39b0cbcabe4d828100357b0851aee7e)

 src/adw-view-switcher-bar.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/adw-view-switcher-bar.c b/src/adw-view-switcher-bar.c
index c3f62248..844a1191 100644
--- a/src/adw-view-switcher-bar.c
+++ b/src/adw-view-switcher-bar.c
@@ -111,6 +111,8 @@ update_bar_revealed (AdwViewSwitcherBar *self)
 
       if (adw_view_stack_page_get_visible (page))
         count++;
+
+      g_object_unref (page);
     }
   }