Remove trailing blank lines.

src/lib/libc/string/strtok.3

@@ -33,7 +33,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: strtok.3,v 1.12 2000/04/24 16:55:44 deraadt Exp $
+.\"	$OpenBSD: strtok.3,v 1.13 2000/08/09 12:57:54 aaron Exp $
 .\"
 .Dd June 29, 1991
 .Dt STRTOK 3
@@ -154,4 +154,3 @@ may return a non-null value.
 Since this implementation always alters the next starting point,
 such a sequence of calls would always return
 .Dv NULL .
-