Fixed small efficiency mistake in energy_min_prolongator
Fixed small efficiency mistake in energy_min_prolongator

kidaa/pyamg,huahbo/pyamg,kidaa/pyamg,pyamg/pyamg,huahbo/pyamg,kidaa/pyamg,huahbo/pyamg,pyamg/pyamg,kidaa/pyamg,huahbo/pyamg,pyamg/pyamg