patch 8.1.1566: error message when terminal closes in another tab

Problem:    Error message when terminal closes while it is not in the current
            tab.
Solution:   Also set "do_set_w_closing" when using the special autocommand
            window. (closes #4552)
diff --git a/src/version.c b/src/version.c
index ee07b96..86ccdf4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1566,
+/**/
     1565,
 /**/
     1564,