patch 9.1.0064: No Wayland support

Problem:  No Wayland support
Solution: Add Wayland UI support
          (lilydjwg)

closes: #9639

Signed-off-by: lilydjwg <lilydjwg@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_clientserver.vim b/src/testdir/test_clientserver.vim
index 53947f4..8be521b 100644
--- a/src/testdir/test_clientserver.vim
+++ b/src/testdir/test_clientserver.vim
@@ -13,7 +13,7 @@
 
 func Check_X11_Connection()
   if has('x11')
-    CheckEnv DISPLAY
+    CheckX11
     try
       call remote_send('xxx', '')
     catch