Prevent infinite loops in orbit checks
Prevent infinite loops in orbit checks

We bookkeep the list of orbiters we've already checked, so if there is a
chain of orbiters orbiting each other we don't keep checking infinitely.

There is an argument that we should prevent this situation arising at
all, but the list should never grow that large so this should be fine

XDTM/tgstation,Razharas/-tg-station,Buggy123/-tg-station,neersighted/tgstation,4dplanner/tgstation,CPTANT/-tg-station,Arianya/tgstation,optimumtact/-tg-station,paprka/-tg-station,kevinz000/-tg-station,infinitystation/-tg-station,Fox-McCloud/-tg-station,MicroWorldwide/SS13-TG-station,lordpidey/-tg-station,AnturK/-tg-station,feemjmeem/-tg-station,XDTM/tgstation,anconfuzedrock/tgstation,Poojawa/tgstation-fork,lordpidey/-tg-station,Razharas/-tg-station,ChangelingRain/-tg-station,Aranclanos/-tg-station,Aranclanos/-tg-station,Robustin/tgstation,tgstation/tgstation,Incoming5643/-tg-station,GunHog/-tg-station,optimumtact/-tg-station,Tacolizard/tgstation,MrStonedOne/tgstation,TheRealGLH/-tg-station,TheVekter/-tg-station,NicholasM10/-tg-station,Cruix/-tg-station,JJRcop/-tg-station,CPTANT/-tg-station,paprka/-tg-station,Profakos/tgstation,feemjmeem/-tg-station,Jordie0608/tgstation,AnturK/-tg-station,CPTANT/-tg-station,Xhuis/-tg-station,anconfuzedrock/tgstation,Mark9013100/tgstation-m9,octareenroon91/-tg-station,Xhuis/-tg-station,QualityVan/tgstation,ChangelingRain/-tg-station,Bawhoppen/-tg-station,NicholasM10/-tg-station,ToGWtF/yogstation,ShizCalev/tgstation,feemjmeem/-tg-station,McBawbaggings/HippieStation,Tacolizard/tgstation,XDTM/tgstation,Jordie0608/-tg-station,NicholasM10/-tg-station,ChangelingRain/-tg-station,Jordie0608/-tg-station,MicroWorldwide/SS13-TG-station,Y0SH1M4S73R/-tg-station,HippieStation/HippieStation,neersighted/tgstation,paprka/-tg-station,TehZombehz/-tg-station,Poojawa/tgstation-fork,Razharas/-tg-station,QualityVan/tgstation,4dplanner/tgstation,Poojawa/tgstation-fork,feemjmeem/-tg-station,optimumtact/-tg-station,Profakos/tgstation,4dplanner/tgstation,Cruix/-tg-station,Cyberboss/tgstation,McBawbaggings/HippieStation,riftstation/riftstation,nicbn/tgstation,GuyonBroadway/HippieStation,paprka/-tg-station,NicholasM10/-tg-station,TheVekter/-tg-station,ShizCalev/tgstation,Shadowlight213/-tg-station,xxalpha/-tg-station,Xhuis/tgfork,kingofkosmos/-tg-station,Y0SH1M4S73R/-tg-station,AnturK/-tg-station,QualityVan/tgstation,JStheguy/tgstation,ChangelingRain/-tg-station,Mark9013100/tgstation-m9,Buggy123/-tg-station,Buggy123/-tg-station,Iamgoofball/-tg-station,TehZombehz/-tg-station,TalkingCactus/tgstation,riftstation/riftstation,nicbn/tgstation,Arianya/tgstation,HippieStation/HippieStation,erwgd/-tg-station,kevinz000/-tg-station,JJRcop/tgstation,GuyonBroadway/HippieStation,Memendia/HippieStation,MicroWorldwide/SS13-TG-station,WJohn/-tg-station,xxalpha/-tg-station,Anonus/-tg-station,Bawhoppen/-tg-station,Mark9013100/tgstation-m9,JStheguy/tgstation,WJohn/-tg-station,PKPenguin321/-tg-station,Incoming5643/-tg-station,loqoman/tgstation,Cruix/-tg-station,Profakos/tgstation,loqoman/tgstation,Cyberboss/tgstation,Aranclanos/-tg-station,JJRcop/-tg-station,xxalpha/-tg-station,Mark9013100/tgstation-m9,CosmicScientist/-tg-station,Mark9013100/tgstation-m9,F-OS/tgstation,McBawbaggings/HippieStation,coiax/-tg-station,NicholasM10/-tg-station,Arianya/tgstation,loqoman/tgstation,kevinz000/-tg-station,Anonus/-tg-station,Cyberboss/tgstation,Xhuis/tgfork,Anonus/-tg-station,tgstation/tgstation,nicbn/tgstation,Incoming5643/-tg-station,JJRcop/tgstation,lordpidey/-tg-station,Thunder12345/-tg-station,kingofkosmos/-tg-station,TehZombehz/-tg-station,PKPenguin321/-tg-station,Poojawa/tgstation-fork,4dplanner/tgstation,Fox-McCloud/-tg-station,Razharas/-tg-station,Memendia/HippieStation,paprka/-tg-station,CPTANT/-tg-station,Poojawa/tgstation-fork,Jordie0608/tgstation,Profakos/tgstation,anconfuzedrock/tgstation,Bawhoppen/-tg-station,QualityVan/tgstation,Poojawa/tgstation-fork,JJRcop/tgstation,4dplanner/tgstation,JJRcop/tgstation,ChangelingRain/-tg-station,JJRcop/tgstation,securitycopper/-tg-station,ChangelingRain/-tg-station,kevinz000/-tg-station,optimumtact/-tg-station,securitycopper/-tg-station,GunHog/-tg-station,Incoming5643/-tg-station,octareenroon91/-tg-station,AnturK/-tg-station,securitycopper/-tg-station,erwgd/-tg-station,GuyonBroadway/HippieStation,xxalpha/-tg-station,erwgd/-tg-station,CosmicScientist/-tg-station,neersighted/tgstation,nicbn/tgstation,Xhuis/-tg-station,Jordie0608/tgstation,Xhuis/tgfork,octareenroon91/-tg-station,Profakos/tgstation,WJohn/-tg-station,QualityVan/tgstation,feemjmeem/-tg-station,Robustin/tgstation,Jordie0608/-tg-station,infinitystation/-tg-station,QualityVan/tgstation,CosmicScientist/-tg-station,Xhuis/tgfork,neersighted/tgstation,TheVekter/-tg-station,tgstation/-tg-station,F-OS/tgstation,HippieStation/HippieStation,F-OS/tgstation,Memendia/HippieStation,JStheguy/tgstation,lordpidey/-tg-station,Niknakflak/-tg-station,Anonus/-tg-station,PKPenguin321/-tg-station,Tacolizard/tgstation,ShizCalev/tgstation,anconfuzedrock/tgstation,Razharas/-tg-station,Shadowlight213/-tg-station,Jordie0608/-tg-station,kevinz000/-tg-station,JStheguy/tgstation,securitycopper/-tg-station,Memendia/HippieStation,optimumtact/-tg-station,WJohn/-tg-station,AnturK/-tg-station,MrStonedOne/tgstation,Shadowlight213/-tg-station,Poojawa/tgstation-fork,PKPenguin321/-tg-station,CosmicScientist/-tg-station,MrStonedOne/tgstation,tgstation/tgstation,Thunder12345/-tg-station,Profakos/tgstation,Tacolizard/tgstation,WJohn/-tg-station,anconfuzedrock/tgstation,anconfuzedrock/tgstation,ohnopigeons/tgstation,tgstation/tgstation,Y0SH1M4S73R/-tg-station,Robustin/tgstation,TheRealGLH/-tg-station,Robustin/tgstation,CosmicScientist/-tg-station,Bawhoppen/-tg-station,loqoman/tgstation,ohnopigeons/tgstation,Y0SH1M4S73R/-tg-station,Mark9013100/tgstation-m9,MicroWorldwide/SS13-TG-station,Cyberboss/tgstation,paprka/-tg-station,TalkingCactus/tgstation,PKPenguin321/-tg-station,SamuelRowe/-tg-station,CosmicScientist/-tg-station,HippieStation/HippieStation,Aranclanos/-tg-station,Shadowlight213/-tg-station,4dplanner/tgstation,JJRcop/-tg-station,ShizCalev/tgstation,ShizCalev/tgstation,ohnopigeons/tgstation,GunHog/-tg-station,Aranclanos/-tg-station,QualityVan/tgstation,HippieStation/HippieStation,paprka/-tg-station,GuyonBroadway/HippieStation,riftstation/riftstation,JStheguy/tgstation,JJRcop/tgstation,tgstation/tgstation,neersighted/tgstation,JJRcop/tgstation,tgstation/-tg-station,Arianya/tgstation,GuyonBroadway/HippieStation,MicroWorldwide/SS13-TG-station,optimumtact/-tg-station,NicholasM10/-tg-station,infinitystation/-tg-station,Buggy123/-tg-station,Tacolizard/tgstation,loqoman/tgstation,XDTM/tgstation,TalkingCactus/tgstation,MicroWorldwide/SS13-TG-station,McBawbaggings/HippieStation,CPTANT/-tg-station,infinitystation/-tg-station,kingofkosmos/-tg-station,Jordie0608/tgstation,infinitystation/-tg-station,Niknakflak/-tg-station,CosmicScientist/-tg-station,CPTANT/-tg-station,GunHog/-tg-station,F-OS/tgstation,Mark9013100/tgstation-m9,TehZombehz/-tg-station,nicbn/tgstation,SamuelRowe/-tg-station,PKPenguin321/-tg-station,Niknakflak/-tg-station,Shadowlight213/-tg-station,Robustin/tgstation,PKPenguin321/-tg-station,Cyberboss/tgstation,Tacolizard/tgstation,Arianya/tgstation,securitycopper/-tg-station,Cruix/-tg-station,optimumtact/-tg-station,TalkingCactus/tgstation,ShizCalev/tgstation,HippieStation/HippieStation,CosmicScientist/-tg-station,feemjmeem/-tg-station,MrStonedOne/tgstation,riftstation/riftstation,lordpidey/-tg-station,Buggy123/-tg-station,Shadowlight213/-tg-station,Xhuis/tgfork,Bawhoppen/-tg-station,lordpidey/-tg-station,AnturK/-tg-station,Fox-McCloud/-tg-station,F-OS/tgstation,Bawhoppen/-tg-station,Y0SH1M4S73R/-tg-station,MrStonedOne/tgstation,Iamgoofball/-tg-station,MrStonedOne/tgstation,feemjmeem/-tg-station,Xhuis/tgfork,Memendia/HippieStation,MicroWorldwide/SS13-TG-station,GunHog/-tg-station,TehZombehz/-tg-station,Niknakflak/-tg-station,Profakos/tgstation,F-OS/tgstation,GuyonBroadway/HippieStation,Cyberboss/tgstation,Incoming5643/-tg-station,MrStonedOne/tgstation,NicholasM10/-tg-station,TheVekter/-tg-station,kingofkosmos/-tg-station,TehZombehz/-tg-station,feemjmeem/-tg-station,ohnopigeons/tgstation,Fox-McCloud/-tg-station,coiax/-tg-station,WJohn/-tg-station,Buggy123/-tg-station,Arianya/tgstation,F-OS/tgstation,McBawbaggings/HippieStation,TheVekter/-tg-station,loqoman/tgstation,Fox-McCloud/-tg-station,XDTM/tgstation,lordpidey/-tg-station,Incoming5643/-tg-station,Incoming5643/-tg-station,xxalpha/-tg-station,infinitystation/-tg-station,WJohn/-tg-station,Memendia/HippieStation,loqoman/tgstation,4dplanner/tgstation,Cruix/-tg-station,riftstation/riftstation,coiax/-tg-station,neersighted/tgstation,kingofkosmos/-tg-station,nicbn/tgstation,xxalpha/-tg-station,infinitystation/-tg-station,coiax/-tg-station,Tacolizard/tgstation,riftstation/riftstation,Thunder12345/-tg-station,CPTANT/-tg-station,GunHog/-tg-station,Iamgoofball/-tg-station,Xhuis/tgfork,Jordie0608/tgstation,McBawbaggings/HippieStation,JStheguy/tgstation,F-OS/tgstation,octareenroon91/-tg-station,ChangelingRain/-tg-station,TheVekter/-tg-station,Niknakflak/-tg-station,Tacolizard/tgstation,JStheguy/tgstation,TheRealGLH/-tg-station,GuyonBroadway/HippieStation,TehZombehz/-tg-station,Cruix/-tg-station,riftstation/riftstation,Memendia/HippieStation,NicholasM10/-tg-station,Jordie0608/tgstation,paprka/-tg-station,Cruix/-tg-station,loqoman/tgstation,Fox-McCloud/-tg-station,JJRcop/-tg-station,securitycopper/-tg-station,GunHog/-tg-station,securitycopper/-tg-station,coiax/-tg-station,octareenroon91/-tg-station,tgstation/tgstation,neersighted/tgstation,Jordie0608/tgstation,Cyberboss/tgstation,securitycopper/-tg-station,tgstation/tgstation,xxalpha/-tg-station,Razharas/-tg-station,Bawhoppen/-tg-station,ChangelingRain/-tg-station,Memendia/HippieStation,ToGWtF/yogstation,Xhuis/tgfork,coiax/-tg-station,anconfuzedrock/tgstation,TheVekter/-tg-station,Thunder12345/-tg-station,SamuelRowe/-tg-station,Y0SH1M4S73R/-tg-station,PKPenguin321/-tg-station,MrStonedOne/tgstation,Robustin/tgstation,Jordie0608/tgstation,infinitystation/-tg-station,4dplanner/tgstation,Fox-McCloud/-tg-station,tgstation/-tg-station,kevinz000/-tg-station,MicroWorldwide/SS13-TG-station,Xhuis/-tg-station,Razharas/-tg-station,McBawbaggings/HippieStation,lordpidey/-tg-station,AnturK/-tg-station,Razharas/-tg-station,Aranclanos/-tg-station,TehZombehz/-tg-station,XDTM/tgstation,Buggy123/-tg-station,ToGWtF/yogstation,Thunder12345/-tg-station,nicbn/tgstation,Y0SH1M4S73R/-tg-station,tgstation/-tg-station,kingofkosmos/-tg-station,HippieStation/HippieStation,Robustin/tgstation,Shadowlight213/-tg-station,xxalpha/-tg-station,CPTANT/-tg-station,Incoming5643/-tg-station,Niknakflak/-tg-station,Iamgoofball/-tg-station,Robustin/tgstation,SamuelRowe/-tg-station,ShizCalev/tgstation,Thunder12345/-tg-station,ToGWtF/yogstation,riftstation/riftstation,Niknakflak/-tg-station,Thunder12345/-tg-station,kevinz000/-tg-station,Buggy123/-tg-station,kingofkosmos/-tg-station,GuyonBroadway/HippieStation,coiax/-tg-station,Aranclanos/-tg-station,Cruix/-tg-station,tgstation/tgstation,Bawhoppen/-tg-station,neersighted/tgstation,Arianya/tgstation,Y0SH1M4S73R/-tg-station,ShizCalev/tgstation,Aranclanos/-tg-station,McBawbaggings/HippieStation,XDTM/tgstation,TheRealGLH/-tg-station,Shadowlight213/-tg-station,kevinz000/-tg-station