[libhandy] swipable: Fix get_range() parameter names

[Adrien Plazas <aplazas src gnome org>]

commit d89d3dca3acfff7b8a1f972fe98182b97979bbe8
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Fri Jun 19 23:25:28 2020 +0500

    swipable: Fix get_range() parameter names
    
    Signed-off-by: Alexander Mikhaylenko <alexm gnome org>

 src/hdy-swipeable.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/hdy-swipeable.h b/src/hdy-swipeable.h
index 1212919d..16441354 100644
--- a/src/hdy-swipeable.h
+++ b/src/hdy-swipeable.h
@@ -54,8 +54,8 @@ struct _HdySwipeableInterface
 
   gdouble   (*get_distance)        (HdySwipeable *self);
   void      (*get_range)           (HdySwipeable *self,
-                                    gdouble      *min_progress,
-                                    gdouble      *max_progress);
+                                    gdouble      *lower,
+                                    gdouble      *upper);
   gdouble * (*get_snap_points)     (HdySwipeable *self,
                                     gint         *n_snap_points);
   gdouble   (*get_progress)        (HdySwipeable *self);