[mutter] tests/test-client: Disable shadow for Wayland client too

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 7b45de941b56b506e4b676cf05b5ba24d9524247
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri Jun 5 00:07:48 2020 +0200

    tests/test-client: Disable shadow for Wayland client too
    
    The shadow was disabled for the X11 client as it was far to unreliable
    when comparing sizes.
    
    It seems that the Wayland backend has been somewhat unreliable as well,
    where some race condition causing incorrect sizes thus a flaky test.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1288

 src/tests/test-client.c | 42 +++++++++++++++++++-----------------------
 1 file changed, 19 insertions(+), 23 deletions(-)
---
diff --git a/src/tests/test-client.c b/src/tests/test-client.c
index 134d9b4659..81ce51ab63 100644
--- a/src/tests/test-client.c
+++ b/src/tests/test-client.c
@@ -858,6 +858,8 @@ int
 main(int argc, char **argv)
 {
   GOptionContext *context = g_option_context_new (NULL);
+  GdkScreen *screen;
+  GtkCssProvider *provider;
   GError *error = NULL;
 
   g_option_context_add_main_entries (context, options, NULL);
@@ -876,31 +878,25 @@ main(int argc, char **argv)
 
   gtk_init (NULL, NULL);
 
-  if (!wayland)
+  screen = gdk_screen_get_default ();
+  provider = gtk_css_provider_new ();
+  static const char *no_decoration_css =
+    "decoration {"
+    "  border-radius: 0 0 0 0;"
+    "  border-width: 0;"
+    "  box-shadow: 0 0 0 0 rgba(0, 0, 0, 0), 0 0 0 0 rgba(0, 0, 0, 0);"
+    "  margin: 0px;"
+    "}";
+  if (!gtk_css_provider_load_from_data (provider,
+                                        no_decoration_css,
+                                        strlen (no_decoration_css),
+                                        &error))
     {
-      GdkScreen *screen;
-      GtkCssProvider *provider;
-
-      screen = gdk_screen_get_default ();
-      provider = gtk_css_provider_new ();
-      static const char *no_decoration_css =
-        "decoration {"
-        "  border-radius: 0 0 0 0;"
-        "  border-width: 0;"
-        "  box-shadow: 0 0 0 0 rgba(0, 0, 0, 0), 0 0 0 0 rgba(0, 0, 0, 0);"
-        "  margin: 0px;"
-        "}";
-      if (!gtk_css_provider_load_from_data (provider,
-                                            no_decoration_css,
-                                            strlen (no_decoration_css),
-                                            &error))
-        {
-          g_printerr ("%s", error->message);
-          return 1;
-        }
-      gtk_style_context_add_provider_for_screen (screen, GTK_STYLE_PROVIDER (provider),
-                                                 GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+      g_printerr ("%s", error->message);
+      return 1;
     }
+  gtk_style_context_add_provider_for_screen (screen, GTK_STYLE_PROVIDER (provider),
+                                             GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
 
   windows = g_hash_table_new_full (g_str_hash, g_str_equal,
                                    g_free, NULL);