[gtk] testsuite: Use Wayland by default

[Matthias Clasen <matthiasc src gnome org>]

commit 73477b5abf51fa8c1820609175fd37fbc5c53c31
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jul 30 22:15:56 2020 -0400

    testsuite: Use Wayland by default
    
    I'm tired of xwayland crashing and killing my shell.

 testsuite/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/testsuite/meson.build b/testsuite/meson.build
index c8677d40f8..03a04048bd 100644
--- a/testsuite/meson.build
+++ b/testsuite/meson.build
@@ -19,13 +19,13 @@ if get_option('debug')
 endif
 
 add_test_setup ('x11',
-                is_default: true,
                 env: common_env + [
                      'GDK_BACKEND=x11',
                      'TEST_OUTPUT_SUBDIR=x11',
                      ])
 
 add_test_setup ('wayland',
+                is_default: true,
                 env: common_env + [
                       'GDK_BACKEND=wayland',
                       'TEST_OUTPUT_SUBDIR=wayland',