[libadwaita/wip/exalm/carousel-fix] carousel: Account for shifts in get_range()

[Alexander Mikhaylenko <alexm src gnome org>]

commit 5dd5b37d823f1e158dfa507d1fba3592f9f39d9b
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Tue Dec 28 18:24:15 2021 +0500

    carousel: Account for shifts in get_range()
    
    Fixes https://gitlab.gnome.org/GNOME/libadwaita/-/issues/324

 src/adw-carousel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/adw-carousel.c b/src/adw-carousel.c
index 3b638cbe..c9acc758 100644
--- a/src/adw-carousel.c
+++ b/src/adw-carousel.c
@@ -218,7 +218,7 @@ get_range (AdwCarousel *self,
     *lower = 0;
 
   if (upper)
-    *upper = child ? child->snap_point : 0;
+    *upper = self->position_shift + (child ? child->snap_point : 0);
 }
 
 static GtkWidget *