fix(lua/numerics): errors when cross-compiling for Windows
fix(lua/numerics): errors when cross-compiling for Windows

Signed-off-by: Leonardo de Moura <7610bae85f2b530654cc716772f1fe653373e892@microsoft.com>

fpvandoorn/lean,leodemoura/lean,rlewis1988/lean,rlewis1988/lean,leodemoura/lean,soonhokong/travis_test,leanprover/lean,johoelzl/lean,fpvandoorn/lean,levnach/lean,levnach/lean,johoelzl/lean,leanprover/lean,digama0/lean,Kha/lean,fgdorais/lean,fpvandoorn/lean2,eigengrau/lean,leanprover/lean,c-cube/lean,johoelzl/lean,leodemoura/lean,levnach/lean,johoelzl/lean,soonhokong/lean-windows,leanprover-community/lean,leanprover-community/lean,fpvandoorn/lean,fgdorais/lean,digama0/lean,dselsam/lean,sp3ctum/lean,leodemoura/lean,avigad/lean,eigengrau/lean,soonhokong/lean-osx,soonhokong/travis_test,leanprover-community/lean,javra/lean,avigad/lean,UlrikBuchholtz/lean,avigad/lean,soonhokong/lean-osx,leanprover/lean,codyroux/lean0.1,fpvandoorn/lean,levnach/lean,leodemoura/lean,fpvandoorn/lean2,dselsam/lean,soonhokong/lean-windows,fgdorais/lean,digama0/lean,leanprover-community/lean,eigengrau/lean,fpvandoorn/lean,htzh/lean,dselsam/lean,johoelzl/lean,dselsam/lean,dselsam/lean,soonhokong/lean,javra/lean,soonhokong/lean-windows,soonhokong/travis_test,fgdorais/lean,sp3ctum/lean,htzh/lean,soonhokong/lean-osx,javra/lean,UlrikBuchholtz/lean,htzh/lean,soonhokong/lean,soonhokong/lean,fpvandoorn/lean2,leanprover/lean,rlewis1988/lean,Kha/lean,digama0/lean,soonhokong/lean-windows,codyroux/lean0.1,digama0/lean,UlrikBuchholtz/lean,soonhokong/lean-osx,fgdorais/lean,c-cube/lean,avigad/lean,fpvandoorn/lean2,leanprover-community/lean,leanprover/lean,c-cube/lean,htzh/lean,Kha/lean,htzh/lean,johoelzl/lean,fpvandoorn/lean2,avigad/lean,levnach/lean,sp3ctum/lean,fgdorais/lean,Kha/lean,soonhokong/lean,rlewis1988/lean,soonhokong/lean-osx,sp3ctum/lean,digama0/lean,eigengrau/lean,c-cube/lean,codyroux/lean0.1,soonhokong/lean,dselsam/lean,eigengrau/lean,leodemoura/lean,soonhokong/travis_test,Kha/lean,UlrikBuchholtz/lean,Kha/lean,codyroux/lean0.1,javra/lean,rlewis1988/lean,rlewis1988/lean,javra/lean,c-cube/lean,UlrikBuchholtz/lean,leanprover-community/lean,fpvandoorn/lean,soonhokong/lean-windows,sp3ctum/lean,avigad/lean