patch 8.0.0497: arabic support is not fully tested

Problem:    Arabic support is not fully tested.
Solution:   Add more tests for the untested functions.  Comment out
            unreachable code.
diff --git a/src/version.c b/src/version.c
index 3cbbe2d..88fd23d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    497,
+/**/
     496,
 /**/
     495,