Reduce the amount of useless typing performed by subst.
Reduce the amount of useless typing performed by subst.

coq/coq,Zimmi48/coq,ejgallego/coq,Zimmi48/coq,ejgallego/coq,SkySkimmer/coq,Zimmi48/coq,ejgallego/coq,coq/coq,SkySkimmer/coq,coq/coq,SkySkimmer/coq,Zimmi48/coq,coq/coq,ejgallego/coq,SkySkimmer/coq