patch 8.2.3477: startup test fails on MS-Windows

Problem:    Startup test fails on MS-Windows.
Solution:   Skip the test if not on Unix.
diff --git a/src/version.c b/src/version.c
index 95200c6..e65eb8c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3477,
+/**/
     3476,
 /**/
     3475,