patch 8.2.2427: can still switch windows for 'completefunc'

Problem:    Can still switch windows for 'completefunc'.
Solution:   Also disallow switching windows for other completions.
diff --git a/src/version.c b/src/version.c
index ed17716..98f01dd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2427,
+/**/
     2426,
 /**/
     2425,