fix(library/vm/vm): initialize m_total_time field
fix(library/vm/vm): initialize m_total_time field

leodemoura/lean,digama0/lean,avigad/lean,fgdorais/lean,johoelzl/lean,avigad/lean,avigad/lean,leanprover/lean,fgdorais/lean,Kha/lean,rlewis1988/lean,fgdorais/lean,Kha/lean,leanprover/lean,dselsam/lean,digama0/lean,Kha/lean,leanprover-community/lean,fpvandoorn/lean,leanprover-community/lean,dselsam/lean,leanprover/lean,digama0/lean,leanprover-community/lean,avigad/lean,leanprover/lean,digama0/lean,fgdorais/lean,johoelzl/lean,fpvandoorn/lean,rlewis1988/lean,rlewis1988/lean,rlewis1988/lean,avigad/lean,leanprover/lean,digama0/lean,fgdorais/lean,leodemoura/lean,johoelzl/lean,leanprover-community/lean,fpvandoorn/lean,leanprover-community/lean,fpvandoorn/lean,leanprover/lean,dselsam/lean,dselsam/lean,fgdorais/lean,dselsam/lean,leodemoura/lean,leodemoura/lean,johoelzl/lean,digama0/lean,Kha/lean,Kha/lean,leodemoura/lean,leodemoura/lean,avigad/lean,johoelzl/lean,johoelzl/lean,dselsam/lean,Kha/lean,fpvandoorn/lean,rlewis1988/lean,rlewis1988/lean,fpvandoorn/lean,leanprover-community/lean