[gnome-taquin] Fix previous commit.

[Arnaud B. <arnaudb src gnome org>]

commit d44feeb0a58767f1b9d15297f72f0c25c7e901d3
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sat Feb 16 20:49:14 2019 +0100

    Fix previous commit.
    
    Commit 1d8f650781 changed
    a bit the UI, unwantedly.

 data/game-headerbar.ui | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/data/game-headerbar.ui b/data/game-headerbar.ui
index 6902eb3..726ad02 100644
--- a/data/game-headerbar.ui
+++ b/data/game-headerbar.ui
@@ -67,6 +67,9 @@
         <property name="action-name">ui.new-game</property>
         <!-- Translators: during a game, tooltip text of the New Game button -->
         <property name="tooltip-text" translatable="yes">Start a new game</property>
+        <style>
+          <class name="text-button"/>
+        </style>
         <child>
           <object class="GtkLabel">
             <property name="visible">True</property>