some functions in the tcp module can be static

*** 40,49 ****
--- 40,51 ----
  #include <netinet/tcp.h>
  #include <inet/optcom.h>
  #include <inet/proto_set.h>
  #include <inet/tcp_impl.h>
  
+ static int      tcp_opt_default(queue_t *, int, int, uchar_t *);
+ 
  /*
   * Table of all known options handled on a TCP protocol stack.
   *
   * Note: This table contains options processed by both TCP and IP levels
   *       and is the superset of options that can be performed on a TCP over IP
*** 304,314 ****
  /*
   * This routine gets default values of certain options whose default
   * values are maintained by protocol specific code
   */
  /* ARGSUSED */
! int
  tcp_opt_default(queue_t *q, int level, int name, uchar_t *ptr)
  {
          int32_t *i1 = (int32_t *)ptr;
          tcp_stack_t     *tcps = Q_TO_TCP(q)->tcp_tcps;
  
--- 306,316 ----
  /*
   * This routine gets default values of certain options whose default
   * values are maintained by protocol specific code
   */
  /* ARGSUSED */
! static int
  tcp_opt_default(queue_t *q, int level, int name, uchar_t *ptr)
  {
          int32_t *i1 = (int32_t *)ptr;
          tcp_stack_t     *tcps = Q_TO_TCP(q)->tcp_tcps;