Auto merge of #9436 - fstr:issue-9403, r=KiChjang
Auto merge of #9436 - fstr:issue-9403, r=KiChjang

Use .find().map() instead of .filter_map().next()

Patch for issue #9403

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larsbergstrom/servo,paulrouget/servo,ConnorGBrewster/servo,SimonSapin/servo,pyfisch/servo,thiagopnts/servo,cbrewster/servo,KiChjang/servo,upsuper/servo,szeged/servo,eddyb/servo,paulrouget/servo,nnethercote/servo,KiChjang/servo,nrc/servo,larsbergstrom/servo,CJ8664/servo,cbrewster/servo,pyfisch/servo,steveklabnik/servo,peterjoel/servo,fiji-flo/servo,fiji-flo/servo,upsuper/servo,CJ8664/servo,notriddle/servo,szeged/servo,eddyb/servo,nrc/servo,paulrouget/servo,thiagopnts/servo,paulrouget/servo,DominoTree/servo,nnethercote/servo,nrc/servo,nnethercote/servo,saneyuki/servo,nnethercote/servo,SimonSapin/servo,canaltinova/servo,paulrouget/servo,steveklabnik/servo,KiChjang/servo,larsbergstrom/servo,rnestler/servo,saneyuki/servo,mbrubeck/servo,jimberlage/servo,mbrubeck/servo,steveklabnik/servo,pyfisch/servo,saneyuki/servo,emilio/servo,canaltinova/servo,sadmansk/servo,dsandeephegde/servo,szeged/servo,SimonSapin/servo,CJ8664/servo,canaltinova/servo,KiChjang/servo,sadmansk/servo,rnestler/servo,CJ8664/servo,cbrewster/servo,dsandeephegde/servo,dsandeephegde/servo,nrc/servo,mbrubeck/servo,avadacatavra/servo,paulrouget/servo,thiagopnts/servo,avadacatavra/servo,fiji-flo/servo,notriddle/servo,upsuper/servo,jimberlage/servo,larsbergstrom/servo,upsuper/servo,avadacatavra/servo,KiChjang/servo,CJ8664/servo,peterjoel/servo,dati91/servo,nnethercote/servo,canaltinova/servo,nrc/servo,DominoTree/servo,fiji-flo/servo,saneyuki/servo,splav/servo,sadmansk/servo,sadmansk/servo,peterjoel/servo,avadacatavra/servo,mattnenterprise/servo,KiChjang/servo,avadacatavra/servo,splav/servo,larsbergstrom/servo,DominoTree/servo,anthgur/servo,notriddle/servo,jimberlage/servo,jimberlage/servo,mbrubeck/servo,canaltinova/servo,upsuper/servo,upsuper/servo,KiChjang/servo,dsandeephegde/servo,sadmansk/servo,nnethercote/servo,mattnenterprise/servo,notriddle/servo,paulrouget/servo,emilio/servo,nnethercote/servo,thiagopnts/servo,steveklabnik/servo,emilio/servo,upsuper/servo,emilio/servo,ConnorGBrewster/servo,mattnenterprise/servo,larsbergstrom/servo,splav/servo,DominoTree/servo,DominoTree/servo,SimonSapin/servo,pyfisch/servo,larsbergstrom/servo,notriddle/servo,sadmansk/servo,dati91/servo,mattnenterprise/servo,canaltinova/servo,paulrouget/servo,rnestler/servo,mbrubeck/servo,splav/servo,peterjoel/servo,anthgur/servo,szeged/servo,saneyuki/servo,peterjoel/servo,DominoTree/servo,thiagopnts/servo,saneyuki/servo,eddyb/servo,peterjoel/servo,DominoTree/servo,nnethercote/servo,nnethercote/servo,DominoTree/servo,peterjoel/servo,fiji-flo/servo,szeged/servo,eddyb/servo,notriddle/servo,larsbergstrom/servo,anthgur/servo,pyfisch/servo,SimonSapin/servo,nnethercote/servo,SimonSapin/servo,notriddle/servo,canaltinova/servo,dsandeephegde/servo,jimberlage/servo,fiji-flo/servo,mattnenterprise/servo,peterjoel/servo,paulrouget/servo,thiagopnts/servo,mbrubeck/servo,ConnorGBrewster/servo,nrc/servo,canaltinova/servo,szeged/servo,splav/servo,emilio/servo,ConnorGBrewster/servo,steveklabnik/servo,avadacatavra/servo,ConnorGBrewster/servo,splav/servo,ConnorGBrewster/servo,CJ8664/servo,larsbergstrom/servo,anthgur/servo,rnestler/servo,mattnenterprise/servo,anthgur/servo,eddyb/servo,jimberlage/servo,cbrewster/servo,notriddle/servo,anthgur/servo,paulrouget/servo,steveklabnik/servo,fiji-flo/servo,emilio/servo,DominoTree/servo,notriddle/servo,dati91/servo,DominoTree/servo,anthgur/servo,dati91/servo,KiChjang/servo,szeged/servo,KiChjang/servo,nrc/servo,dati91/servo,cbrewster/servo,jimberlage/servo,rnestler/servo,thiagopnts/servo,pyfisch/servo,peterjoel/servo,emilio/servo,saneyuki/servo,CJ8664/servo,cbrewster/servo,saneyuki/servo,eddyb/servo,upsuper/servo,pyfisch/servo,rnestler/servo,SimonSapin/servo,mattnenterprise/servo,sadmansk/servo,szeged/servo,emilio/servo,notriddle/servo,rnestler/servo,fiji-flo/servo,cbrewster/servo,szeged/servo,szeged/servo,saneyuki/servo,rnestler/servo,larsbergstrom/servo,dati91/servo,splav/servo,pyfisch/servo,SimonSapin/servo,emilio/servo,mbrubeck/servo,splav/servo,splav/servo,jimberlage/servo,avadacatavra/servo,ConnorGBrewster/servo,splav/servo,dati91/servo,steveklabnik/servo,pyfisch/servo,pyfisch/servo,jimberlage/servo,KiChjang/servo,avadacatavra/servo,dsandeephegde/servo,mbrubeck/servo,dati91/servo,eddyb/servo,anthgur/servo,eddyb/servo,CJ8664/servo,sadmansk/servo,mattnenterprise/servo,dsandeephegde/servo,ConnorGBrewster/servo,thiagopnts/servo,saneyuki/servo,dsandeephegde/servo,cbrewster/servo,peterjoel/servo,emilio/servo