patch 8.2.4244: MS-Windows: warning from MSVC on debug build

Problem:    MS-Windows: warning from MSVC on debug build.
Solution:   Adjust "/opt"o options.  Remove unused variables.  Make variables
            uppercase for consistency. (Ken Takata, closes #9647)
diff --git a/src/version.c b/src/version.c
index 400f578..0caa33a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4244,
+/**/
     4243,
 /**/
     4242,