[gtk/matthiasc/for-master: 2/2] Adwaita: Fix list separators

[Matthias Clasen <matthiasc src gnome org>]

commit b5ec20db885e3b6850c538cba61d9b3541f8037d
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Nov 13 17:18:05 2020 -0500

    Adwaita: Fix list separators
    
    Commit bfe5b0d1b7a1374964 ran into some specificity
    trouble.
    
    Fixes: #3353

 gtk/theme/Adwaita/_common.scss | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 8b5c53bdec..88b34ad65f 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -3099,11 +3099,11 @@ list {
   > row.expander .row-header { padding: 2px; }
 
   &.horizontal row.separator,
-  &.separators.horizontal > row {
+  &.separators.horizontal > row:not(.separator) {
     border-left: 1px solid $_treeview_borders_color;
   }
   &:not(.horizontal) row.separator,
-  &.separators:not(.horizontal) > row {
+  &.separators:not(.horizontal) > row:not(.separator) {
     border-bottom: 1px solid $_treeview_borders_color;
   }
 }