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_quotestar.vim b/src/testdir/test_quotestar.vim
index 1d26942..322ce62 100644
--- a/src/testdir/test_quotestar.vim
+++ b/src/testdir/test_quotestar.vim
@@ -139,8 +139,8 @@
   if has('macunix')
     let skipped = Do_test_quotestar_for_macunix()
   elseif has('x11')
-    if empty($DISPLAY)
-      let skipped = "Test can only run when $DISPLAY is set."
+    if empty($DISPLAY) || !empty($WAYLAND_DISPLAY)
+      let skipped = "Test can only run when $DISPLAY is set and $WAYLAND_DISPLAY is not set."
     else
       let skipped = Do_test_quotestar_for_x11()
     endif