patch 8.2.1721: MS-Windows installer doesn't work

Problem:    MS-Windows installer doesn't work.
Solution:   Write "Russian" in ASCII. (closes #6995, see #).
diff --git a/src/version.c b/src/version.c
index a5cb6a8..29199d2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1721,
+/**/
     1720,
 /**/
     1719,