busybox: 1.14.0 dhcp fix

--- busybox-1.14.0/networking/udhcp/leases.c	Tue Apr 14 01:42:51 2009

+++ busybox-1.14.0-dhcp_hostname/networking/udhcp/leases.c	Tue Apr 21 02:41:22 2009

@@ -63,7 +63,8 @@

 	if (oldest) {

 		oldest->hostname[0] = '\0';

 		if (hostname) {

-        		hostname_length = hostname[-1]; /* look at option size byte */

+			/* option size byte, + 1 for NUL */

+        		hostname_length = hostname[-1] + 1;

 			if (hostname_length > sizeof(oldest->hostname))

 				hostname_length = sizeof(oldest->hostname);

             		hostname = (uint8_t*) safe_strncpy((char*)oldest->hostname, (char*)hostname, hostname_length);