patch 9.0.0009: going past the end of a menu item with only modifier

Problem:    Going past the end of a menu item with only modifier.
Solution:   Check for NUL.
diff --git a/src/version.c b/src/version.c
index ea1cc16..003984a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    9,
+/**/
     8,
 /**/
     7,