Fix bug in parfor lowering when there is no input parameter
Fix bug in parfor lowering when there is no input parameter

seibert/numba,sklam/numba,cpcloud/numba,IntelLabs/numba,cpcloud/numba,stuartarchibald/numba,seibert/numba,gmarkall/numba,stuartarchibald/numba,stuartarchibald/numba,stonebig/numba,seibert/numba,numba/numba,jriehl/numba,stonebig/numba,gmarkall/numba,stuartarchibald/numba,sklam/numba,gmarkall/numba,stuartarchibald/numba,cpcloud/numba,cpcloud/numba,gmarkall/numba,sklam/numba,stonebig/numba,seibert/numba,cpcloud/numba,jriehl/numba,IntelLabs/numba,IntelLabs/numba,sklam/numba,stonebig/numba,numba/numba,IntelLabs/numba,sklam/numba,seibert/numba,jriehl/numba,IntelLabs/numba,numba/numba,stonebig/numba,numba/numba,jriehl/numba,numba/numba,gmarkall/numba,jriehl/numba