Fix another race condition
Fix another race condition

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