patch 8.0.0223: Coverity warns for an uninitialized variable

Problem:    Coverity gets confused by the flags passed to find_tags() and
            warnts for an uninitialized variable.
Solution:   Disallow using cscope and help tags at the same time.
diff --git a/src/version.c b/src/version.c
index cae4e7d..d92b6ed 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    223,
+/**/
     222,
 /**/
     221,