patch 8.0.1684: ml_get errors when using terminal window for shell command

Problem:    ml_get errors when using terminal window for shell command.
            (Blay263)
Solution:   Do not change the size of the current window.
diff --git a/src/version.c b/src/version.c
index 9f1075e..2890f71 100644
--- a/src/version.c
+++ b/src/version.c
@@ -763,6 +763,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1684,
+/**/
     1683,
 /**/
     1682,