patch 8.0.1714: term_setsize() does not give an error in a normal buffer

Problem:    Term_setsize() does not give an error in a normal buffer.
Solution:   Add an error message.
diff --git a/src/version.c b/src/version.c
index b76ccf4..76596f2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -763,6 +763,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1714,
+/**/
     1713,
 /**/
     1712,