patch 9.0.0038: 'listchars' test fails

Problem:    'listchars' test fails.
Solution:   Use window-local value after setting the global value
diff --git a/src/version.c b/src/version.c
index 8130506..8ddbdda 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    38,
+/**/
     37,
 /**/
     36,