Fix lurking bug exposed by r18687

Modified: trunk/reactos/services/dhcp/options.c

--- trunk/reactos/services/dhcp/options.c	2005-10-26 20:42:19 UTC (rev 18780)
+++ trunk/reactos/services/dhcp/options.c	2005-10-26 23:19:37 UTC (rev 18781)
@@ -595,6 +595,7 @@

 				foo.s_addr = htonl(getULong(dp));
 				strncpy(op, inet_ntoa(foo), opleft - 1);
 				op[opleft - 1] = ANSI_NULL;

+				opcount = strlen(op);

 				if (opcount >= opleft)
 					goto toobig;
 				opleft -= opcount;