better check for existing default canvases to avoid overwriting an already existing canvas when using MakeDefCanvas(). Fix by "Hamlet".
better check for existing default canvases to avoid overwriting an
already existing canvas when using MakeDefCanvas(). Fix by "Hamlet".


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@7102 27541ba8-7e3a-0410-8455-c3a389f83636

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ret2/root,veprbl/root,root-mirror/root,gbitzes/root,BerserkerTroll/root,lgiommi/root,veprbl/root,gbitzes/root,smarinac/root,perovic/root,CristinaCristescu/root,simonpf/root,Dr15Jones/root,strykejern/TTreeReader,Y--/root,cxx-hep/root-cern,jrtomps/root,root-mirror/root,beniz/root,arch1tect0r/root,ffurano/root5,gbitzes/root,jrtomps/root,BerserkerTroll/root,thomaskeck/root,mkret2/root,cxx-hep/root-cern,Y--/root,thomaskeck/root,dfunke/root,dfunke/root,abhinavmoudgil95/root,arch1tect0r/root,gganis/root,sawenzel/root,satyarth934/root,agarciamontoro/root,olifre/root,olifre/root,gbitzes/root,sirinath/root,zzxuanyuan/root-compressor-dummy,dfunke/root,vukasinmilosevic/root,satyarth934/root,pspe/root,simonpf/root,strykejern/TTreeReader,root-mirror/root,gganis/root,olifre/root,pspe/root,jrtomps/root,kirbyherm/root-r-tools,krafczyk/root,esakellari/root,BerserkerTroll/root,davidlt/root,ffurano/root5,smarinac/root,lgiommi/root,sawenzel/root,mhuwiler/rootauto,smarinac/root,sbinet/cxx-root,mattkretz/root,esakellari/my_root_for_test,thomaskeck/root,mkret2/root,zzxuanyuan/root,nilqed/root,sbinet/cxx-root,mhuwiler/rootauto,dfunke/root,BerserkerTroll/root,omazapa/root-old,esakellari/my_root_for_test,strykejern/TTreeReader,Dr15Jones/root,satyarth934/root,0x0all/ROOT,olifre/root,Duraznos/root,bbockelm/root,bbockelm/root,lgiommi/root,perovic/root,sawenzel/root,esakellari/root,mkret2/root,mattkretz/root,mkret2/root,Dr15Jones/root,arch1tect0r/root,abhinavmoudgil95/root,esakellari/my_root_for_test,mattkretz/root,omazapa/root-old,mattkretz/root,mkret2/root,nilqed/root,abhinavmoudgil95/root,arch1tect0r/root,mhuwiler/rootauto,olifre/root,beniz/root,0x0all/ROOT,gganis/root,nilqed/root,ffurano/root5,lgiommi/root,omazapa/root-old,BerserkerTroll/root,cxx-hep/root-cern,zzxuanyuan/root-compressor-dummy,zzxuanyuan/root,georgtroska/root,bbockelm/root,beniz/root,mattkretz/root,omazapa/root,nilqed/root,tc3t/qoot,CristinaCristescu/root,tc3t/qoot,CristinaCristescu/root,smarinac/root,zzxuanyuan/root-compressor-dummy,karies/root,tc3t/qoot,sawenzel/root,simonpf/root,beniz/root,zzxuanyuan/root,cxx-hep/root-cern,alexschlueter/cern-root,mkret2/root,veprbl/root,sirinath/root,simonpf/root,mhuwiler/rootauto,zzxuanyuan/root,gganis/root,georgtroska/root,beniz/root,zzxuanyuan/root-compressor-dummy,karies/root,Duraznos/root,sawenzel/root,arch1tect0r/root,zzxuanyuan/root,perovic/root,Y--/root,vukasinmilosevic/root,simonpf/root,jrtomps/root,mkret2/root,veprbl/root,omazapa/root-old,root-mirror/root,esakellari/root,esakellari/my_root_for_test,gganis/root,tc3t/qoot,satyarth934/root,lgiommi/root,BerserkerTroll/root,veprbl/root,zzxuanyuan/root-compressor-dummy,evgeny-boger/root,Duraznos/root,bbockelm/root,sirinath/root,buuck/root,omazapa/root,bbockelm/root,beniz/root,abhinavmoudgil95/root,root-mirror/root,sawenzel/root,Y--/root,krafczyk/root,gganis/root,agarciamontoro/root,sbinet/cxx-root,CristinaCristescu/root,CristinaCristescu/root,karies/root,Dr15Jones/root,gbitzes/root,karies/root,sirinath/root,olifre/root,gbitzes/root,bbockelm/root,gganis/root,pspe/root,agarciamontoro/root,dfunke/root,Duraznos/root,georgtroska/root,esakellari/root,cxx-hep/root-cern,tc3t/qoot,omazapa/root,sirinath/root,satyarth934/root,abhinavmoudgil95/root,sbinet/cxx-root,bbockelm/root,CristinaCristescu/root,omazapa/root,mattkretz/root,veprbl/root,agarciamontoro/root,perovic/root