(handle_vanilla_tcp): shorten length when we shorten the buffer, this

matter im the PK-INIT encKey case where a checksum is done over the
whole packet. Reported by Olga Kornievskaia


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@18345 ec53bebd-3082-4978-b11e-865c3cabbd6b

kdc/connect.c

@@ -608,6 +608,7 @@ handle_vanilla_tcp (krb5_context context,
     krb5_storage_free(sp);
     if(d->len - 4 >= len) {
 	memmove(d->buf, d->buf + 4, d->len - 4);
+	d->len -= 4;
 	return 1;
     }
     return 0;