top: some miscellaneous accumulated tweaks and cleanup

I've grown to hate that man document rendering when it
comes to hyphenation. So this patch will eliminate it.

And we'll also eliminate an unnecessary initialization
in that top program code concerned with combined cpus.

Signed-off-by: Jim Warner <james.warner@comcast.net>

top/top.c

@@ -5422,7 +5422,7 @@ static int cpu_unify (struct stat_stack *this, int nobuf) {
       snprintf(pfx, sizeof(pfx), "%-7.7s:", fmtmk("%d-%d", beg, rSv(stat_ID, s_int)));
       n = cpu_tics(&accum, pfx, nobuf);
       memset(&stack, 0, sizeof(stack));
-      ix = beg = 0;
+      ix = 0;
       return n;
    }
    ++ix;