fix(frontends/lean/decl_util): bug at add_local_ref
fix(frontends/lean/decl_util): bug at add_local_ref

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