[gtk+/gtk-3-22] HighContrast: Avoid expander↔combobox interference

[Daniel Boles <dboles src gnome org>]

commit 7dfb99c2cac6b393cb8039216a2ba88a4673717f
Author: Daniel Boles <dboles src gnome org>
Date:   Mon Jan 1 18:49:09 2018 +0000

    HighContrast: Avoid expander↔combobox interference
    
    as per commit b4b9aa1e5fab6a1f8c27b768813ab4ed04f3cd6f

 gtk/theme/HighContrast/_common.scss |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/theme/HighContrast/_common.scss b/gtk/theme/HighContrast/_common.scss
index 792d218..98662a8 100644
--- a/gtk/theme/HighContrast/_common.scss
+++ b/gtk/theme/HighContrast/_common.scss
@@ -2787,7 +2787,7 @@ row.activatable {
  *************/
 
 expander {
-  & arrow {
+  title > arrow {
     min-width: 16px;
     min-height: 16px;
     -gtk-icon-source: -gtk-icontheme('pan-end-symbolic');