Avoid to call Sumw2() in DrawNormalized if it has  been called before
Avoid to call Sumw2() in DrawNormalized if it has  been called before

georgtroska/root,pspe/root,olifre/root,nilqed/root,root-mirror/root,nilqed/root,sbinet/cxx-root,bbockelm/root,perovic/root,mhuwiler/rootauto,beniz/root,BerserkerTroll/root,esakellari/root,sbinet/cxx-root,georgtroska/root,gganis/root,jrtomps/root,zzxuanyuan/root-compressor-dummy,vukasinmilosevic/root,CristinaCristescu/root,lgiommi/root,perovic/root,zzxuanyuan/root,sawenzel/root,mattkretz/root,sirinath/root,nilqed/root,evgeny-boger/root,root-mirror/root,gganis/root,georgtroska/root,georgtroska/root,zzxuanyuan/root-compressor-dummy,arch1tect0r/root,agarciamontoro/root,Y--/root,Duraznos/root,root-mirror/root,omazapa/root,sawenzel/root,abhinavmoudgil95/root,vukasinmilosevic/root,gbitzes/root,thomaskeck/root,esakellari/root,dfunke/root,sbinet/cxx-root,satyarth934/root,davidlt/root,bbockelm/root,sirinath/root,veprbl/root,esakellari/my_root_for_test,mattkretz/root,karies/root,vukasinmilosevic/root,nilqed/root,zzxuanyuan/root-compressor-dummy,arch1tect0r/root,veprbl/root,0x0all/ROOT,veprbl/root,buuck/root,thomaskeck/root,mkret2/root,abhinavmoudgil95/root,krafczyk/root,root-mirror/root,gbitzes/root,jrtomps/root,lgiommi/root,sbinet/cxx-root,Duraznos/root,0x0all/ROOT,satyarth934/root,nilqed/root,dfunke/root,krafczyk/root,thomaskeck/root,simonpf/root,nilqed/root,satyarth934/root,Y--/root,sirinath/root,perovic/root,evgeny-boger/root,lgiommi/root,esakellari/root,esakellari/root,pspe/root,lgiommi/root,veprbl/root,davidlt/root,jrtomps/root,buuck/root,mattkretz/root,dfunke/root,Duraznos/root,Duraznos/root,esakellari/my_root_for_test,georgtroska/root,mhuwiler/rootauto,dfunke/root,nilqed/root,davidlt/root,vukasinmilosevic/root,Y--/root,satyarth934/root,jrtomps/root,omazapa/root,olifre/root,simonpf/root,agarciamontoro/root,karies/root,esakellari/my_root_for_test,buuck/root,esakellari/my_root_for_test,omazapa/root-old,zzxuanyuan/root,veprbl/root,simonpf/root,CristinaCristescu/root,CristinaCristescu/root,gbitzes/root,agarciamontoro/root,BerserkerTroll/root,nilqed/root,vukasinmilosevic/root,omazapa/root,karies/root,beniz/root,omazapa/root,gbitzes/root,Y--/root,perovic/root,CristinaCristescu/root,zzxuanyuan/root,CristinaCristescu/root,omazapa/root-old,mhuwiler/rootauto,satyarth934/root,olifre/root,CristinaCristescu/root,sirinath/root,zzxuanyuan/root,krafczyk/root,krafczyk/root,gbitzes/root,BerserkerTroll/root,Y--/root,simonpf/root,sawenzel/root,evgeny-boger/root,CristinaCristescu/root,perovic/root,jrtomps/root,zzxuanyuan/root,abhinavmoudgil95/root,sirinath/root,krafczyk/root,mhuwiler/rootauto,thomaskeck/root,beniz/root,evgeny-boger/root,evgeny-boger/root,mkret2/root,evgeny-boger/root,esakellari/my_root_for_test,zzxuanyuan/root,mhuwiler/rootauto,root-mirror/root,georgtroska/root,esakellari/my_root_for_test,zzxuanyuan/root-compressor-dummy,thomaskeck/root,nilqed/root,arch1tect0r/root,gganis/root,gganis/root,karies/root,sawenzel/root,agarciamontoro/root,zzxuanyuan/root-compressor-dummy,agarciamontoro/root,root-mirror/root,beniz/root,Duraznos/root,bbockelm/root,perovic/root,BerserkerTroll/root,Duraznos/root,buuck/root,omazapa/root,esakellari/my_root_for_test,Duraznos/root,Duraznos/root,vukasinmilosevic/root,omazapa/root,mkret2/root,Y--/root,thomaskeck/root,dfunke/root,CristinaCristescu/root,bbockelm/root,veprbl/root,esakellari/my_root_for_test,simonpf/root,esakellari/root,beniz/root,beniz/root,BerserkerTroll/root,veprbl/root,davidlt/root,mhuwiler/rootauto,mhuwiler/rootauto,root-mirror/root,zzxuanyuan/root-compressor-dummy,dfunke/root,gbitzes/root,olifre/root,abhinavmoudgil95/root,evgeny-boger/root,smarinac/root,karies/root,thomaskeck/root,bbockelm/root,gbitzes/root,zzxuanyuan/root-compressor-dummy,davidlt/root,simonpf/root,Y--/root,davidlt/root,root-mirror/root,satyarth934/root,buuck/root,mattkretz/root,sirinath/root,simonpf/root,satyarth934/root,buuck/root,davidlt/root,abhinavmoudgil95/root,mattkretz/root,root-mirror/root,lgiommi/root,veprbl/root,sawenzel/root,root-mirror/root,gganis/root,sbinet/cxx-root,CristinaCristescu/root,pspe/root,agarciamontoro/root,krafczyk/root,pspe/root,pspe/root,jrtomps/root,omazapa/root-old,abhinavmoudgil95/root,gganis/root,sirinath/root,arch1tect0r/root,arch1tect0r/root,agarciamontoro/root,BerserkerTroll/root,vukasinmilosevic/root,omazapa/root-old,georgtroska/root,Duraznos/root,olifre/root,omazapa/root,lgiommi/root,lgiommi/root,krafczyk/root,0x0all/ROOT,georgtroska/root,BerserkerTroll/root,abhinavmoudgil95/root,arch1tect0r/root,0x0all/ROOT,sbinet/cxx-root,CristinaCristescu/root,mattkretz/root,perovic/root,beniz/root,beniz/root,zzxuanyuan/root-compressor-dummy,krafczyk/root,gbitzes/root,omazapa/root,bbockelm/root,buuck/root,zzxuanyuan/root,smarinac/root,gganis/root,sawenzel/root,mhuwiler/rootauto,veprbl/root,smarinac/root,BerserkerTroll/root,mkret2/root,beniz/root,simonpf/root,smarinac/root,arch1tect0r/root,karies/root,buuck/root,krafczyk/root,dfunke/root,gbitzes/root,sirinath/root,dfunke/root,dfunke/root,perovic/root,pspe/root,mattkretz/root,davidlt/root,Y--/root,0x0all/ROOT,abhinavmoudgil95/root,mkret2/r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