Fix issue that caused hanging tests: use the intended tolerance.
Fix issue that caused hanging tests: use the intended tolerance.

palashahuja/mlpack,theranger/mlpack,ajjl/mlpack,theranger/mlpack,ajjl/mlpack,ranjan1990/mlpack,darcyliu/mlpack,palashahuja/mlpack,ranjan1990/mlpack,darcyliu/mlpack,theranger/mlpack,darcyliu/mlpack,ajjl/mlpack,ranjan1990/mlpack,palashahuja/mlpack