patch 9.0.1648: result of syntax tests is hard to see

Problem:    Result of syntax tests is hard to see.
Solution:   List the failed tests.
diff --git a/src/version.c b/src/version.c
index b027efd..191bf50 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1648,
+/**/
     1647,
 /**/
     1646,