patch 8.2.0466: not parsing messages recursively breaks the govim plugin

Problem:    Not parsing messages recursively breaks the govim plugin.
Solution:   When called recursively do handle messages but do not close
            channels.
diff --git a/src/version.c b/src/version.c
index c33bf2c..1630b5e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    466,
+/**/
     465,
 /**/
     464,