[lwip-devel] Minor tweak to dhcp.c

[Bill Auerbach]

On or about line 1340:

  LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | 2, ("transaction id xid++(%"X32_F") dhcp->xid(%"U32_F")\n",xid,dhcp->xid));

I think the U32_F should be X32_F.  It makes more sense to see them in the same format and with values of ABCDxxxx – hex shows this.

Bill