[gtk] tests: Add label-sizing.ui to the XFAIL list

[Emmanuele Bassi <ebassi src gnome org>]

commit b5ed2d310ee50eec92262c1659bc387db55b61f3
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Nov 4 23:46:22 2019 +0000

    tests: Add label-sizing.ui to the XFAIL list
    
    Changes in Pango may make this test fail.

 testsuite/reftests/meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/testsuite/reftests/meson.build b/testsuite/reftests/meson.build
index 6cba6cd451..632e97ffeb 100644
--- a/testsuite/reftests/meson.build
+++ b/testsuite/reftests/meson.build
@@ -436,6 +436,7 @@ xfails = [
   # these depend on details of text layout
   'label-background.ui',
   'label-wrap-justify.ui',
+  'label-sizing.ui',
   'quit-mnemonic.ui',
 ]