patch 8.0.1718: terminal scrollback test fails on MS-Windows

Problem:    Terminal scrollback test fails on MS-Windows.
Solution:   Check for the last line of output anticipating there might be an
            empty line below it.
diff --git a/src/version.c b/src/version.c
index 207048f..be4e4ed 100644
--- a/src/version.c
+++ b/src/version.c
@@ -763,6 +763,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1718,
+/**/
     1717,
 /**/
     1716,