updated for version 7.3.857
Problem:    The QuitPre autocommand event does not trigger for :qa and :wq.
Solution:   Trigger the event. (Tatsuro Fujii)
diff --git a/src/version.c b/src/version.c
index 90d7a4a..f865b72 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    857,
+/**/
     856,
 /**/
     855,