fix(frontends/lean/structure_cmd): error parsing structure without parameters followed by ': Type'
fix(frontends/lean/structure_cmd): error parsing structure without parameters followed by ': Type'

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