patch 8.2.1699: build failure due to missing error message

Problem:    Build failure due to missing error message.
Solution:   Add error message.
diff --git a/src/version.c b/src/version.c
index ea9a50a..e77c795 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1699,
+/**/
     1698,
 /**/
     1697,