[gtk/matthiasc/for-master] Adwaita: Set a background for magnifiers

[Matthias Clasen <matthiasc src gnome org>]

commit 9c0aaad4e37a3a26fa3b83369a5d2e636dc6d679
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Nov 3 10:12:32 2020 -0500

    Adwaita: Set a background for magnifiers
    
    The magnifier in entries is magnifying the GtkText
    widget, which does not draw any background itself.
    Therefore, we give the magnifier a background, to
    make things look as expected.
    
    Fixes: #3318

 gtk/theme/Adwaita/_common.scss | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 119694649d..a552965cdd 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -1845,6 +1845,9 @@ popover.background {
   }
 }
 
+magnifier {
+  background-color: $base_color;
+}
 
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  * Notebooks *