patch 8.2.2845: MS-Windows: warning for signed/unsigned comparison

Problem:    MS-Windows: warning for signed/unsigned comparison.
Solution:   Add type cast.
diff --git a/src/version.c b/src/version.c
index 68f05af..e8827c4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2845,
+/**/
     2844,
 /**/
     2843,