patch 8.1.1220: build fails on MS-Windows

Problem:    Build fails on MS-Windows.
Solution:   Move declaration to start of block.
diff --git a/src/version.c b/src/version.c
index 638faad..9fe5d2d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1220,
+/**/
     1219,
 /**/
     1218,