Fix issue when dispatcher's finalizer is called with an exception set (#664)
Fix issue when dispatcher's finalizer is called with an exception set (#664)

sklam/numba,ssarangi/numba,gmarkall/numba,stuartarchibald/numba,ssarangi/numba,seibert/numba,jriehl/numba,IntelLabs/numba,stonebig/numba,gmarkall/numba,numba/numba,pombredanne/numba,sklam/numba,stonebig/numba,jriehl/numba,pombredanne/numba,ssarangi/numba,cpcloud/numba,cpcloud/numba,stefanseefeld/numba,IntelLabs/numba,IntelLabs/numba,pombredanne/numba,stonebig/numba,numba/numba,stonebig/numba,seibert/numba,numba/numba,gmarkall/numba,pitrou/numba,stuartarchibald/numba,IntelLabs/numba,gdementen/numba,jriehl/numba,stefanseefeld/numba,pombredanne/numba,pitrou/numba,ssarangi/numba,stuartarchibald/numba,stuartarchibald/numba,GaZ3ll3/numba,GaZ3ll3/numba,seibert/numba,pitrou/numba,stefanseefeld/numba,sklam/numba,GaZ3ll3/numba,pitrou/numba,ssarangi/numba,sklam/numba,pitrou/numba,sklam/numba,pombredanne/numba,stefanseefeld/numba,gdementen/numba,gdementen/numba,numba/numba,jriehl/numba,IntelLabs/numba,cpcloud/numba,gdementen/numba,stefanseefeld/numba,gmarkall/numba,seibert/numba,GaZ3ll3/numba,jriehl/numba,cpcloud/numba,seibert/numba,gdementen/numba,cpcloud/numba,gmarkall/numba,stonebig/numba,numba/numba,GaZ3ll3/numba,stuartarchibald/numba