[gnome-terminal] headerbar: Add some spacing to primary menu

[Christian Persch <chpe src gnome org>]

commit 42af3c894eb7bccb7a6473ee6a5c5ce63ec13642
Author: Florian Müllner <fmuellner gnome org>
Date:   Mon Dec 10 22:00:33 2018 +0100

    headerbar: Add some spacing to primary menu
    
    The menu is generated by GTK+, so we don't have much control over
    the final appearance, and in particular the width ends up being
    determined by the longest string in the menu. Make sure it doesn't
    get too cramped by adding some spacing to the zoom icons.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756798

 src/terminal.common.css | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/src/terminal.common.css b/src/terminal.common.css
index 8ec36889..4c577263 100644
--- a/src/terminal.common.css
+++ b/src/terminal.common.css
@@ -8,6 +8,12 @@ terminal-window scrolledwindow overshoot.bottom
   background: none;
 }
 
+popover button.model
+{
+  padding-left: 16px;
+  padding-right: 16px;
+}
+
 .disclosure-button
 {
   padding-left: 4px;