Set prototype of emptyTags to null
Set prototype of emptyTags to null

Otherwise, tags named after properties of the object prototype would
have been found.

mail-apps/htmlparser2,jasonsanjose/htmlparser2,jasonsanjose/htmlparser2,kirbysayshi/node-htmlparser,magicode/htmlparser2,broadly/htmlparser2,mail-apps/htmlparser2,broadly/htmlparser2,fasterize/node-htmlparser,frontapp/htmlparser2,frontapp/htmlparser2,magicode/htmlparser2