(isc_tcp_accept_fn): Don't set scb->mode. Fail properly if

	isc_getraddress() fails.

src/libraries/libisc-new/src/isc_tcp.c

@@ -79,9 +79,12 @@ isc_tcp_accept_fn(IscHandlerList *UNUSED(hl),
   
   /* Fill in the session info structure */
   new_scb->state = ISC_STATE_RUNNING;
-  new_scb->mode  = O_RDWR;
-  /* FIXME: isc_getraddress may return NULL.  Should we fail then?  */
   new_scb->info.tcp.raddr = isc_getraddress(new_scb);
+  if (new_scb->info.tcp.raddr == NULL)
+  {
+      isc_destroy(NULL, scb);
+      return NULL;
+  }
   new_scb->info.tcp.laddr = isc_getladdress(new_scb);
   
   return new_scb;