message: Add missing require_authorization
  eos::setcode was not requiring authorization from the account whose code
  was being set. This is definitely incorrect. Alice should not be able to
  set Bob's code without Bob's authorization. :P
diff: @@ -195,6 +195,8 @@ void apply_eos_setcode(apply_context& context) {
  auto& db = context.mutable_db;
  auto msg = context.msg.as<types::setcode>();
  + context.require_authorization(msg.account);
  +
  FC_ASSERT( msg.vmtype == 0 );
  FC_ASSERT( msg.vmversion == 0 );
  