patch 8.0.0583: fold test hangs on MS-Windows

Problem:    Fold test hangs on MS-Windows.
Solution:   Avoid overflow in compare.
diff --git a/src/version.c b/src/version.c
index 0533f57..fd84c76 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    583,
+/**/
     582,
 /**/
     581,