Merge branch 'ab/unused-annotation'

Undoes 'jk/unused-annotation' topic and redoes it to work around
Coccinelle rules misfiring false positives in unrelated codepaths.

* ab/unused-annotation:
  git-compat-util.h: use "deprecated" for UNUSED variables
  git-compat-util.h: use "UNUSED", not "UNUSED(var)"

log-tree.c

@@ -135,7 +135,7 @@ static int ref_filter_match(const char *refname,
 }
 
 static int add_ref_decoration(const char *refname, const struct object_id *oid,
-			      int UNUSED(flags),
+			      int flags UNUSED,
 			      void *cb_data)
 {
 	int i;