patch 8.1.0171: typing CTRL-W n in a terminal window causes ml_get error

Problem:    Typing CTRL-W n in a terminal window causes ml_get error.
Solution:   When resizing the terminal outside of terminal_loop() make sure
            the snapshot is complete.
diff --git a/src/version.c b/src/version.c
index dec266d..2821a1b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -790,6 +790,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    171,
+/**/
     170,
 /**/
     169,