Protect HParam.xfirst to be >= 1
Protect HParam.xfirst to be >= 1


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@5637 27541ba8-7e3a-0410-8455-c3a389f83636

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