tests-clar: mark unused variables

tests-clar/refs/branches/foreach.c

@@ -28,6 +28,9 @@ static int count_branch_list_cb(const char *branch_name, git_branch_t branch_typ
 {
 	int *count = (int *)payload;
 
+	GIT_UNUSED(branch_type);
+	GIT_UNUSED(branch_name);
+
 	(*count)++;
 
 	return 0;
@@ -83,6 +86,8 @@ static int contains_branch_list_cb(const char *branch_name, git_branch_t branch_
 {
 	int pos = 0;
 
+	GIT_UNUSED(branch_type);
+
 	struct expectations *exp = (struct expectations *)payload;
 
 	while (exp[pos].branch_name)