patch 8.2.0940: build failure with tiny features

Problem:    Build failure with tiny features.
Solution:   Add #ifdef.  Add UNUSED.  A bit more cleaning up.
diff --git a/src/version.c b/src/version.c
index 49a2cf3..26073db 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    940,
+/**/
     939,
 /**/
     938,