fix(build): fix emscripten build in travis (#68)
fix(build): fix emscripten build in travis (#68)


fpvandoorn/lean,leanprover-community/lean,leanprover-community/lean,leanprover-community/lean,digama0/lean,fpvandoorn/lean,leanprover-community/lean,digama0/lean,dselsam/lean,dselsam/lean,digama0/lean,dselsam/lean,dselsam/lean,fpvandoorn/lean,leanprover-community/lean,digama0/lean,digama0/lean,fpvandoorn/lean,digama0/lean,dselsam/lean,dselsam/lean,fpvandoorn/lean,fpvandoorn/lean,leanprover-community/lean