patch 9.0.0471: no test for what patch 9.0.0469 fixes

Problem:    No test for what patch 9.0.0469 fixes.
Solution:   Add a test. (closes #11140)
diff --git a/src/version.c b/src/version.c
index 3f832ad..aa8159e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    471,
+/**/
     470,
 /**/
     469,