patch 8.2.4118: using UNUSED for argument that is used

Problem:    Using UNUSED for argument that is used.
Solution:   Remove UNUSED.
diff --git a/src/version.c b/src/version.c
index 1c367e6..fe27375 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4118,
+/**/
     4117,
 /**/
     4116,