[gtk: 1/2] pathbar: Set .slider-button style class to slider buttons again

[Timm Bäder <baedert src gnome org>]

commit 667b3b117d17ecddc79b9a72955ff217afa7c8f0
Author: nana-4 <hnmaigo gmail com>
Date:   Sat Aug 15 18:31:32 2020 +0900

    pathbar: Set .slider-button style class to slider buttons again
    
    This was set in the .ui file that no longer exists, so we need to set it
    again here.

 gtk/gtkpathbar.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtk/gtkpathbar.c b/gtk/gtkpathbar.c
index 7b52d40b01..9e8e6adc58 100644
--- a/gtk/gtkpathbar.c
+++ b/gtk/gtkpathbar.c
@@ -210,9 +210,11 @@ gtk_path_bar_init (GtkPathBar *path_bar)
   const char *home;
 
   path_bar->up_slider_button = gtk_button_new_from_icon_name ("pan-start-symbolic");
+  gtk_widget_add_css_class (path_bar->up_slider_button, "slider-button");
   gtk_widget_set_parent (path_bar->up_slider_button, GTK_WIDGET (path_bar));
 
   path_bar->down_slider_button = gtk_button_new_from_icon_name ("pan-end-symbolic");
+  gtk_widget_add_css_class (path_bar->down_slider_button, "slider-button");
   gtk_widget_set_parent (path_bar->down_slider_button, GTK_WIDGET (path_bar));
 
   /* GtkBuilder wont let us connect 'swapped' without specifying the signal's