patch 9.1.1428: completion: register completion needs cleanup

Problem:  completion: register completion needs cleanup
Solution: slightly refactor get_register_completion()
          (glepnir)

closes: #17432

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index c9a1c16..7c3c4f1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -710,6 +710,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1428,
+/**/
     1427,
 /**/
     1426,