Bug 1377993: Make node slots less memory hungry in common cases.
Bug 1377993: Make node slots less memory hungry in common cases.

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