patch 9.0.1649: syntax test failure causes script to abort

Problem:    Syntax test failure causes script to abort.
Solution:   Fix appending string to list.
diff --git a/src/version.c b/src/version.c
index 191bf50..5535b9a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1649,
+/**/
     1648,
 /**/
     1647,