patch 8.2.0545: unused arguments ignored in non-standard way

Problem:    Unused arguments ignored in non-standard way.
Solution:   Add UNUSED instead of (void).
diff --git a/src/version.c b/src/version.c
index 945896d..c06d6f4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    545,
+/**/
     544,
 /**/
     543,