Code Analysis: "5406 Remove unused parameters" when used in variable initialization

CREATE PROCEDURE test_proc( in_value IN PLS_INTEGER )
AS
v_value PLS_INTEGER := in_value;
BEGIN
dbms_output.put_line( v_value );
END test_proc;

I’ll link this one to http://www.toadworld.com/products/toad-for-oracle/toad_for_oracle_beta_program/f/86/p/31028/61873#61873 .