patch 9.0.0216: undo earlier test sometimes fails on MS-Windows

Problem:    Undo earlier test sometimes fails on MS-Windows.
Solution:   Use another file name.
diff --git a/src/version.c b/src/version.c
index f08f617..a485330 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    216,
+/**/
     215,
 /**/
     214,