[zenity/gtk4-port] scale: set a page increment so mouse wheel can be used on widget

[Logan Rathbone <larathbone src gnome org>]

commit 55f7e47e51ad781c9646d5412431314257367be3
Author: Hg <dev indigo re>
Date:   Wed Sep 21 21:43:19 2022 +0200

    scale: set a page increment so mouse wheel can be used on widget
    
    the page increment is set to the same as step increment, for simplicity.
    
    Closes #30
    
    (cherry picked from commit 2d7d505548c10c0e59cd46cb462a8df55f138d67)

 src/scale.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/scale.c b/src/scale.c
index 28831c49..21400405 100644
--- a/src/scale.c
+++ b/src/scale.c
@@ -120,7 +120,8 @@ zenity_scale (ZenityData *data, ZenityScaleData *scale_data)
        gtk_range_set_range (GTK_RANGE (scale),
                        scale_data->min_value, scale_data->max_value);
        gtk_range_set_value (GTK_RANGE (scale), scale_data->value);
-       gtk_range_set_increments (GTK_RANGE (scale), scale_data->step, 0);
+       gtk_range_set_increments (
+               GTK_RANGE (scale), scale_data->step, scale_data->step);
 
        if (scale_data->print_partial)
        {