Remove unused variable +
Remove unused variable +

protect agains using namespace std and global names which become ambiguous.
While cling can be fixed, user can still do using namespace std or something like this
and break everything.

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