patch 8.1.2176: syntax attributes not combined with Visual highlighting

Problem:    Syntax attributes not combined with Visual highlighting. (Arseny
            Nasokin)
Solution:   Combine the attributes. (closes #5083)
diff --git a/src/version.c b/src/version.c
index e371d68..3a7347c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2176,
+/**/
     2175,
 /**/
     2174,