From Axel: Fix error calculation for THnSparse: first calculate the bin's current error, then add new bin content. Also remove a few stray "return"s.
From Axel:
Fix error calculation for THnSparse: first calculate the bin's current
error, then add new bin content. Also remove a few stray "return"s.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@21560 27541ba8-7e3a-0410-8455-c3a389f83636

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