patch 8.2.3119: compiler warning for unused argument

Problem:    Compiler warning for unused argument.
Solution:   Add UNUSED.
diff --git a/src/version.c b/src/version.c
index e080a2f..03e2546 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3119,
+/**/
     3118,
 /**/
     3117,