[patch] Remove unnecessary timerclear in tcpbench

[Nan Xiao]

Hi tech@,

Following is a trivial modification which removes unnecessary
initialization of timeval. I am Sorry if this patch seems a little picky.

Index: tcpbench.c
===================================================================
RCS file: /cvs/src/usr.bin/tcpbench/tcpbench.c,v
retrieving revision 1.55
diff -u -p -r1.55 tcpbench.c
--- tcpbench.c  10 May 2018 14:29:17 -0000      1.55
+++ tcpbench.c  12 May 2018 02:06:54 -0000
@@ -253,7 +253,6 @@ set_slice_timer(int on)
        if (on) {
                if (evtimer_pending(&mainstats.timer, NULL))
                        return;
-               timerclear(&tv);
                /* XXX Is there a better way to do this ? */
                tv.tv_sec = ptb->rflag / 1000;
                tv.tv_usec = (ptb->rflag % 1000) * 1000;

-- 
Best Regards
Nan Xiao