patch 8.2.3287: channel events not handled in BufEnter autocommand

Problem:    Channel events not handled in BufEnter autocommand.
Solution:   Decrement dont_parse_messages earlier. (Tim Pope, closes #8697)
diff --git a/src/version.c b/src/version.c
index f42be15..ef05ea3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3287,
+/**/
     3286,
 /**/
     3285,