some functions in the tcp module can be static

@@ -40,10 +40,12 @@
 #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

@@ -304,11 +306,11 @@
 /*
  * This routine gets default values of certain options whose default
  * values are maintained by protocol specific code
  */
 /* ARGSUSED */
-int
+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;