avoid derefering a null pointer
avoid derefering a null pointer


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@15268 27541ba8-7e3a-0410-8455-c3a389f83636

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uwiler/rootauto,smarinac/root,alexschlueter/cern-root,CristinaCristescu/root,gganis/root,satyarth934/root,veprbl/root,lgiommi/root,BerserkerTroll/root,beniz/root,smarinac/root,Dr15Jones/root,esakellari/root,gganis/root,gbitzes/root,bbockelm/root,beniz/root,zzxuanyuan/root-compressor-dummy,root-mirror/root,kirbyherm/root-r-tools,zzxuanyuan/root,esakellari/my_root_for_test,arch1tect0r/root,thomaskeck/root,CristinaCristescu/root,esakellari/root,agarciamontoro/root,jrtomps/root,abhinavmoudgil95/root,Dr15Jones/root,CristinaCristescu/root,karies/root,evgeny-boger/root,sawenzel/root,nilqed/root,mkret2/root,evgeny-boger/root,veprbl/root,davidlt/root,Y--/root,bbockelm/root,dfunke/root,CristinaCristescu/root,krafczyk/root,Duraznos/root,ffurano/root5,veprbl/root,gganis/root,BerserkerTroll/root,vukasinmilosevic/root,pspe/root,omazapa/root-old,zzxuanyuan/root,mkret2/root,omazapa/root-old,olifre/root,0x0all/ROOT,cxx-hep/root-cern,evgeny-boger/root,perovic/root,mattkretz/root,tc3t/qoot,sawenzel/root,zzxuanyuan/root,bbockelm/root,veprbl/root,arch1tect0r/root,gbitzes/root,zzxuanyuan/root,omazapa/root,alexschlueter/cern-root,root-mirror/root,Duraznos/root,arch1tect0r/root,ffurano/root5,abhinavmoudgil95/root,perovic/root,davidlt/root,omazapa/root,strykejern/TTreeReader,omazapa/root,Duraznos/root,olifre/root,georgtroska/root,omazapa/root,omazapa/root,evgeny-boger/root,davidlt/root,strykejern/TTreeReader,beniz/root,olifre/root,esakellari/root,alexschlueter/cern-root,georgtroska/root,simonpf/root,dfunke/root,Duraznos/root,pspe/root,dfunke/root,sawenzel/root,omazapa/root-old,smarinac/root,dfunke/root,davidlt/root,Y--/root,sbinet/cxx-root,esakellari/my_root_for_test,evgeny-boger/root,esakellari/my_root_for_test,gganis/root,bbockelm/root,kirbyherm/root-r-tools,simonpf/root,gbitzes/root,omazapa/root,dfunke/root,davidlt/root,mkret2/root,abhinavmoudgil95/root,zzxuanyuan/root,pspe/root,veprbl/root,sirinath/root,lgiommi/root,nilqed/root,lgiommi/root,lgiommi/root,vukasinmilosevic/root,gbitzes/root,tc3t/qoot,sbinet/cxx-root,nilqed/root,root-mirror/root,simonpf/root,krafczyk/root,buuck/root,perovic/root,karies/root,olifre/root,pspe/root,omazapa/root,mkret2/root,abhinavmoudgil95/root,buuck/root,sirinath/root,satyarth934/root,tc3t/qoot,gbitzes/root,mhuwiler/rootauto,nilqed/root,root-mirror/root,strykejern/TTreeReader,pspe/root,krafczyk/root,Duraznos/root,agarciamontoro/root,thomaskeck/root,abhinavmoudgil95/root,agarciamontoro/root,abhinavmoudgil95/root,0x0all/ROOT,dfunke/root,karies/root,omazapa/root,0x0all/ROOT,lgiommi/root,mhuwiler/rootauto,smarinac/root,georgtroska/root,sbinet/cxx-root,CristinaCristescu/root,cxx-hep/root-cern,BerserkerTroll/root,arch1tect0r/root,omazapa/root,buuck/root,abhinavmoudgil95/root,krafczyk/root,buuck/root,karies/root,dfunke/root,sawenzel/root,cxx-hep/root-cern,sirinath/root,Duraznos/root,buuck/root,satyarth934/root,simonpf/root,gganis/root,beniz/root,sirinath/root,cxx-hep/root-cern,tc3t/qoot,tc3t/qoot,gganis/root,mattkretz/root,karies/root,esakellari/root,smarinac/root,davidlt/root,0x0all/ROOT,pspe/root,esakellari/my_root_for_test,thomaskeck/root,simonpf/root,perovic/root,abhinavmoudgil95/root,zzxuanyuan/root,Y--/root,karies/root,beniz/root,mkret2/root,georgtroska/root,esakellari/my_root_for_test,krafczyk/root,kirbyherm/root-r-tools,krafczyk/root,davidlt/root,Y--/root,perovic/root,sirinath/root