make resolve_path lazyish again by boxing the iterator
make resolve_path lazyish again by boxing the iterator

Wilfred/racer,ifraixedes/racer,racer-rust/racer,rranelli/racer,alkama/racer,pmarcelll/racer,kbknapp/racer,drewet/racer,MattWis/racer,BonsaiDen/racer,BonsaiDen/racer,syhkiller/racer,ajroetker/racer,marvelm/racer,sthapaun/racer,ajroetker/racer,tafia/racer,asantopietro/racer,rranelli/racer,bluss/racer,andelf/racer,drewet/racer,syohex/racer,sthapaun/racer,hotpxl/racer,syohex/racer,phildawes/racer,kbknapp/racer,ane/racer,asantopietro/racer,dleslie/racer,MattWis/racer,jaxx/racer,ifraixedes/racer,bluss/racer,syhkiller/racer,sliz1/racer,birkenfeld/racer,ane/racer