Allow proc spec inside pkg body when proc definition is also present

[phartenfeller]

Don't know why this works. Notice the debug proc is present two times.

create or replace package body test_pkg as 

  g_debug         BOOLEAN := TRUE;

  PROCEDURE debug (p_text  IN  VARCHAR2);

  procedure xyz(
    pi_num in number
  )
  as
  begin
    null;
  end xyz;
  
  PROCEDURE debug (p_text  IN  VARCHAR2) IS
  BEGIN
    IF g_debug THEN
      DBMS_OUTPUT.put_line(SUBSTR(p_text, 1, 255));
    END IF;
  END;

end test_pkg;