Make emtpy rule can be inserted into rule tree
Make emtpy rule can be inserted into rule tree

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