patch 8.0.1042: without the syntax feature highlighting doesn't work

Problem:    Without the syntax feature highlighting doesn't work.
Solution:   Always use unsigned short to store attributes.
diff --git a/src/version.c b/src/version.c
index e594667..77620ad 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1042,
+/**/
     1041,
 /**/
     1040,