patch 8.2.4437: vartabs test fails on MS-Windows

Problem:    Vartabs test fails on MS-Windows.
Solution:   Use iso8859-1 'encoding'. (Ken Takata, closes #9818)
diff --git a/src/version.c b/src/version.c
index 6eae5e6..7001029 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4437,
+/**/
     4436,
 /**/
     4435,