free some more memory. check some more return values.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@4021 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/krb5/mk_rep.c

@@ -79,6 +79,8 @@ krb5_mk_rep(krb5_context context,
   free (ap.enc_part.cipher.data);
   outbuf->length = len;
   outbuf->data = malloc(len);
+  if (outbuf->data == NULL)
+      return ENOMEM;
   memcpy(outbuf->data, buf + sizeof(buf) - len, len);
   return 0;
 }