[gtk/kill-popup-windows: 8/13] reftests: Fix nth-child reftest

[Matthias Clasen <matthiasc src gnome org>]

commit 1310599d04a690e6f46821b37742c277b1d029eb
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jan 8 20:49:48 2020 -0500

    reftests: Fix nth-child reftest
    
    This gets broken by different handling of extra space
    between grid and box, which is not the point of the test.
    Fix this by centering both.

 testsuite/reftests/nth-child.ref.ui | 1 +
 testsuite/reftests/nth-child.ui     | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/testsuite/reftests/nth-child.ref.ui b/testsuite/reftests/nth-child.ref.ui
index d314db405d..9919845c0b 100644
--- a/testsuite/reftests/nth-child.ref.ui
+++ b/testsuite/reftests/nth-child.ref.ui
@@ -3,6 +3,7 @@
   <object class="GtkWindow" id="window1">
     <child>
       <object class="GtkGrid" id="grid1">
+        <property name="halign">center</property>
         <property name="orientation">vertical</property>
         <child>
           <object class="GtkLabel" id="label1">
diff --git a/testsuite/reftests/nth-child.ui b/testsuite/reftests/nth-child.ui
index ff7e106dbe..0339602920 100644
--- a/testsuite/reftests/nth-child.ui
+++ b/testsuite/reftests/nth-child.ui
@@ -3,6 +3,7 @@
   <object class="GtkWindow" id="window1">
     <child>
       <object class="GtkBox" id="box1">
+        <property name="halign">center</property>
         <property name="orientation">vertical</property>
         <child>
           <object class="GtkLabel" id="label1">