fix warning from gcc 4.0 about not having virtual dtor.
fix warning from gcc 4.0 about not having virtual dtor.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@11884 27541ba8-7e3a-0410-8455-c3a389f83636

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