[gnome-builder] adwaita: fix circular buttons in notifications popover

[Christian Hergert <chergert src gnome org>]

commit b26dff11270e93aea7363752195148f3c6f68c4f
Author: Christian Hergert <chergert redhat com>
Date:   Tue Mar 12 11:31:55 2019 -0700

    adwaita: fix circular buttons in notifications popover

 src/libide/themes/themes/Adwaita-shared.css | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/libide/themes/themes/Adwaita-shared.css b/src/libide/themes/themes/Adwaita-shared.css
index 579aa6fe3..9fb276562 100644
--- a/src/libide/themes/themes/Adwaita-shared.css
+++ b/src/libide/themes/themes/Adwaita-shared.css
@@ -77,6 +77,10 @@ popover.notificationsbutton row.notification .body {
   opacity: 0.8;
   font-size: 0.95em;
 }
+popover.notificationsbutton button.circular {
+  min-height: 24px;
+  min-width: 24px;
+}
 
 /* development styles */
 window.development-version  headerbar:last-child {