fix(util/memory): fix jemalloc support
fix(util/memory): fix jemalloc support

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