[gtk/matthiasc/for-master] Adwaita: be careful with list separators

[Matthias Clasen <matthiasc src gnome org>]

commit 473ed75ed54524677efdbddd05896210565b7be0
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Aug 9 12:01:08 2020 -0400

    Adwaita: be careful with list separators
    
    We only want the list .separators class to affect its
    immediate children - otherwise, we end up with separators
    in dropdowns that are places into button strips. As a side
    benefit, restricting this to immediate children makes for
    faster matching.

 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 c453733828..deeaed97f9 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -3078,11 +3078,11 @@ list {
   > row.expander .row-header { padding: 2px; }
 
   &.horizontal row.separator:not(:first-child),
-  &.separators.horizontal row:not(:first-child) {
+  &.separators.horizontal > row:not(:first-child) {
     border-left: 1px solid $borders_color;
   }
   &:not(.horizontal) row.separator:not(:first-child),
-  &.separators:not(.horizontal) row:not(:first-child) {
+  &.separators:not(.horizontal) > row:not(:first-child) {
     border-top: 1px solid $borders_color;
   }
 }