patch 9.0.0717: compiler warning for unused variable in tiny build

Problem:    Compiler warning for unused variable in tiny build.
Solution:   Add #ifdefs.
diff --git a/src/version.c b/src/version.c
index bfdd1fa..f33673e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    717,
+/**/
     716,
 /**/
     715,