hook tame(2) sandbox up to build

OpenBSD only for now
diff --git a/sandbox-tame.c b/sandbox-tame.c
index 12c91ad..daa3f3a 100644
--- a/sandbox-tame.c
+++ b/sandbox-tame.c
@@ -15,6 +15,10 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "includes.h"
+
+#ifdef SANDBOX_TAME
+
 #include <sys/types.h>
 #include <sys/ioctl.h>
 #include <sys/syscall.h>
@@ -38,7 +42,7 @@
 };
 
 struct ssh_sandbox *
-ssh_sandbox_init(void)
+ssh_sandbox_init(struct monitor *m)
 {
 	struct ssh_sandbox *box;
 
@@ -69,3 +73,5 @@
 	box->child_pid = child_pid;
 	/* Nothing to do here */
 }
+
+#endif /* SANDBOX_TAME */