patch 9.1.0457: tests: test_gui fails on Wayland

v:windowid is set in GUI buils with Wayland

Problem:  tests: test_gui fails on Wayland
          (after: 9.1.0064, Gary Johnson)
Solution: drop the "empty($WAYLAND_DISPLAY)" condition in the test

fixes: #14886

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 6e02c3e..221fcf8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    457,
+/**/
     456,
 /**/
     455,