FIX: NameError if JOBLIB_MULTIPROCESSING is set to 0
FIX: NameError if JOBLIB_MULTIPROCESSING is set to 0

tomMoral/joblib,lesteve/joblib,aabadie/joblib,aabadie/joblib,tomMoral/joblib,lesteve/joblib,karandesai-96/joblib,joblib/joblib,joblib/joblib,karandesai-96/joblib