patch 8.0.1628: channel log doesn't mention exiting

Problem:    Channel log doesn't mention exiting.
Solution:   Add a ch_log() call in getout().
diff --git a/src/version.c b/src/version.c
index 0cc4920..dc76b4a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1628,
+/**/
     1627,
 /**/
     1626,