Fix join bug: Do nothing on empty target
Fix join bug: Do nothing on empty target

TogeSR/Lumen-Pokemon-Showdown,Pokemon-Devs/Pokemon-Showdown,svivian/Pokemon-Showdown,DB898/theregalias,abrulochp/Dropp-Pokemon-Showdown,BuzzyOG/Pokemon-Showdown,Pikachuun/Pokemon-Showdown,KewlStatics/Showdown-Template,yashagl/yash-showdown,TheDiabolicGift/Showdown-Boilerplate,Firestatics/Omega-Alpha,Psyientist/Showdown-Boilerplate,QuiteQuiet/Pokemon-Showdown,miahjennatills/Pokemon-Showdown,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,KewlStatics/Shit,CharizardtheFireMage/Showdown-Boilerplate,AWailOfATail/awoat,ScottehMax/Pokemon-Showdown,Breakfastqueen/advanced,sama2/Universe-Pokemon-Showdown,hayleysworld/Showdown-Boilerplate,TheManwithskills/COC,PrimalGallade45/Lumen-Pokemon-Showdown,SkyeTheFemaleSylveon/Pokemon-Showdown,CreaturePhil/Showdown-Boilerplate,Celecitia/Plux-Pokemon-Showdown,SerperiorBae/BaeShowdown,Irraquated/Pokemon-Showdown,AvinashSwaminathan/Pokelegends,SerperiorBae/PokemonShowdown2,Bryan-0/Pokemon-Showdown,Oiawesome/DPPtServ2,lFernanl/Zero-Pokemon-Showdown,Guernouille/Pokemon-Showdown,ZestOfLife/PSserver,hayleysworld/harmonia,Mystifi/Exiled,Sora-Server/Sora,TheFenderStory/Showdown-Boilerplate,panpawn/Gold-Server,MayukhKundu/Technogear-Final,Irraquated/Showdown-Boilerplate,TheDiabolicGift/Showdown-Boilerplate,SSJGVegito007/Vegito-s-Server,TheManwithskills/COC,Atwar/server-epilogueleague.rhcloud.com,jumbowhales/Pokemon-Showdown,Flareninja/Pokemon-Showdown-1,Enigami/Pokemon-Showdown,TheDiabolicGift/Lumen-Pokemon-Showdown,AustinXII/Pokemon-Showdown,panpawn/Pokemon-Showdown,Articuno-I/Pokemon-Showdown,Ridukuo/Test2,yashagl/pokemon,Johto-Serverr/Werfin-Boilerplate,scotchkorean27/Pokemon-Showdown,FakeSloth/Infinite,zek7rom/SpacialGaze,Yggdrasil-League/Yggdrasil,MayukhKundu/Mudkip-Server,svivian/Pokemon-Showdown,Kill-The-Noise/BlakJack-Boilerplate,comedianchameleon/test,Enigami/Pokemon-Showdown,hayleysworld/serenity,SerperiorBae/Bae-Showdown-2,SerperiorBae/PokemonShowdown2,anubhabsen/Pokemon-Showdown,Wando94/Pokemon-Showdown,megaslowbro1/Pokemon-Showdown-Server-for-megaslowbro1,DesoGit/Tsunami_PS,TheManwithskills/Creature-phil-boiler,DesoGit/TsunamiPS,kuroscafe/Showdown-Boilerplate,Kokonoe-san/Glacia-PS,Firestatics/Firestatics46,AWailOfATail/Pokemon-Showdown,azum4roll/Pokemon-Showdown,hayleysworld/serenityserver,comedianchameleon/test,SilverTactic/Dragotica-Pokemon-Showdown,MayukhKundu/Flame-Savior,bai2/Dropp,yashagl/pokemon-showdown,gustavo515/final,MayukhKundu/Pokemon-Domain,TheManwithskills/Server-2,comedianchameleon/servertest1,MeliodasBH/Articuno-Land,SilverTactic/Showdown-Boilerplate,scotchkorean27/Pokemon-Showdown,Flareninja/Sora,TheFenderStory/Showdown-Boilerplate,Darkshadow6/PokeMoon-Creation,urkerab/Pokemon-Showdown,Sora-Server/Sora,gustavo515/final,xCrystal/Pokemon-Showdown,SilverTactic/Pokemon-Showdown,abulechu/Lumen-Pokemon-Showdown,Extradeath/advanced,Flareninja/Showdown-Boilerplate,AvinashSwaminathan/lotus-v3,xfix/Pokemon-Showdown,k3naan/Pokemon-Showdown,HoeenCoder/SpacialGaze,brettjbush/Pokemon-Showdown,TheManwithskills/Server---Thermal,TheManwithskills/Dusk--Showdown,sama2/Lumen-Pokemon-Showdown,SerperiorBae/Pokemon-Showdown,lFernanl/Lumen-Pokemon-Showdown,Flareninja/Sora,BadSteel/Omega-Pokemon-Showdown,BasedGod7/PH,megaslowbro1/Showdown-Server-again,MasterFloat/LQP-Server-Showdown,Flareninja/Sora,Git-Worm/City-PS,Thiediev/Pokemon-Showdown,cadaeic/Pokemon-Showdown,miahjennatills/Pokemon-Showdown,kuroscafe/Paradox,superman8900/Pokemon-Showdown,SkyeTheFemaleSylveon/Mudkip-Server,HoeenCoder/SpacialGaze,InvalidDN/Pokemon-Showdown,Git-Worm/City-PS,svivian/Pokemon-Showdown,panpawn/Gold-Server,Zarel/Pokemon-Showdown,gustavo515/test,SerperiorBae/Pokemon-Showdown-1,Lord-Haji/SpacialGaze,zczd/enculer,TheManwithskills/DS,BlazingAura/Showdown-Boilerplate,SilverTactic/Pokemon-Showdown,Articuno-I/Pokemon-Showdown,Firestatics/Omega-Alpha,MayukhKundu/Technogear,bai2/Dropp,Arcticblast/Pokemon-Showdown,Alpha-Devs/Alpha-Server,Extradeath/advanced,AWailOfATail/awoat,ZestOfLife/FestiveLife,kupochu/Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,gustavo515/batata,ankailou/Pokemon-Showdown,sama2/Dropp-Pokemon-Showdown,FakeSloth/wulu,Adithya4Uberz/The-Tsunami-League,svivian/Pokemon-Showdown,lFernanl/Mudkip-Server,javi501/Lumen-Pokemon-Showdown,TheManwithskills/Server-2,Tesarand/Pokemon-Showdown,abrulochp/Dropp-Pokemon-Showdown,ShowdownHelper/Saffron,aakashrajput/Pokemon-Showdown,Alpha-Devs/OmegaRuby-Server,yashagl/pokecommunity,BlakJack/Kill-The-Noise,Ecuacion/Lumen-Pokemon-Showdown,DarkSuicune/Kakuja-2.0,Wando94/Spite,Firestatics/omega,Flareninja/Pokemon-Showdown,Hidden-Mia/Roleplay-PS,UniversalMan12/Universe-Server,sama2/Universe-Pokemon-Showdown,Syurra/Pokemon-Showdown,UniversalMan12/Universe-Server,TheDiabolicGift/Lumen-Pokemon-Showdown,TheManwithskills/Server-2,ShowdownHelper/Saffron,MeliodasBH/Articuno-Land,HoeenCoder/SpacialGaze,jd4564/Pokemon-Showdown,UniversalMan12/Universe-Server,megaslowbro1/Pokemon-Showdown,abulechu/Lumen-Pokemon-Showdown,EmmaKitty/Pokemon-Showdown,SilverTactic/Showdown-Boilerplate,Ridukuo/Test,iFaZe/SliverX,hayleysworld/serenity,Kevinxzllz/PS-Openshift-Server,gustavo515/test,CreaturePhil/Showdown-Boilerplate,Legendaryhades/Oblivion,Oiawesome/DPPtServ2,Syurra/Pokemon-Showdown,KewlStatics/Alliance,JellalTheMage/Jellals-Server,AvinashSwaminathan/lotus,TheFenderStory/Pokemon-Showdown,Extradeath/psserver,sirDonovan/Pokemon-Showdown,Sora-League/Sora,zek7rom/SpacialGaze,CreaturePhil/Showdown-Boilerplate,BuzzyOG/Pokemon-Showdown,Lord-Haji/SpacialGaze,MayukhKundu/Mudkip-Server,lAlejandro22/lolipoop,Evil-kun/Pokemon-Showdown,Neosweiss/Pokemon-Showdown,Adithya4Uberz/KTN,SolarisFox/Pokemon-Showdown,EmmaKitty/Pokemon-Showdown,hayleysworld/serenityc9,BadSteel/Pokemon-Showdown,asdfghjklohhnhn/Pokemon-Showdown,piiiikachuuu/Pokemon-Showdown,hayleysworld/asdfasdf,comedianchameleon/test,MasterFloat/Pokemon-Showdown,forbiddennightmare/Pokemon-Showdown-1,Flareninja/Hispano-Pokemon-Showdown,EienSeiryuu/Pokemon-Showdown,AbsolitoSweep/Absol-server,CreaturePhil/Pokemon-Showdown,Mystifi/Exiled,Nineage/Showdown-Boilerplate,Firestatics/omega,Enigami/Pokemon-Showdown,theodelhay/test,abulechu/Dropp-Pokemon-Showdown,aakashrajput/Pokemon-Showdown,kubetz/Pokemon-Showdown,ehk12/coregit,Atwar/http-server-femalehq.rhcloud.com-80.psim.us-,Pikachuun/Joimmon-Showdown,lFernanl/Pokemon-Showdown,Ransei1/Alt,Extradeath/psserver,Kevinxzllz/PS-Openshift-Server,Werfin96/Ultimate,xfix/Pokemon-Showdown,Irraquated/EOS-Master,Sora-League/Sora,ehk12/clone,MayukhKundu/Technogear,forbiddennightmare/Pokemon-Showdown-1,Ecuacion/Pokemon-Showdown,HoeenCoder/SpacialGaze,MeliodasBH/boarhat,hayleysworld/Showdown-Boilerplate,LegendBorned/PS-Boilerplate,TheManwithskills/DS,TogeSR/Lumen-Pokemon-Showdown,Checkinator/Pokemon-Showdown,SerperiorBae/Bae-Showdown,MasterFloat/LQP-Server-Showdown,SilverTactic/Dragotica-Pokemon-Showdown,SubZeroo99/Pokemon-Showdown,Ecuacion/Pokemon-Showdown,Breakfastqueen/advanced,sama2/Viridian-Pokemon-Showdown,KewlStatics/Pokeindia-Codes,ehk12/coregit,CreaturePhil/Pokemon-Showdown,PauLucario/LQP-Server-Showdown,SolarisFox/Pokemon-Showdown,Stroke123/POKEMON,SerperiorBae/Pokemon-Showdown-1,gustavo515/batata,ZeroParadox/ugh,Volcos/SpacialGaze,Breakfastqueen/advanced,Kenny-/Pokemon-Showdown,SerperiorBae/Pokemon-Showdown-1,jd4564/Pokemon-Showdown,LustyAsh/EOS-Master,PS-Spectral/Spectral,Alpha-Devs/OmegaRuby-Server,xfix/Pokemon-Showdown,MasterFloat/Pokemon-Showdown,psnsVGC/Wish-Server,DarkSuicune/Pokemon-Showdown,theodelhay/test,Zipzapadam/Server,Adithya4Uberz/The-Tsunami-League,ZestOfLife/PSserver,Pikachuun/Pokemon-Showdown-SMCMDM,TheManwithskills/Creature-phil-boiler,Stroke123/POKEMON,TheManwithskills/New-boiler-test,Alpha-Devs/Alpha-Server,yashagl/yash-showdown,Chespin14/Custom-Platform-Pokemon-Showdown,catanatron/pokemon-rebalance,hayleysworld/harmonia,Irraquated/Showdown-Boilerplate,Flareninja/Pokemon-Showdown,Atwar/http-server-femalehq.rhcloud.com-80.psim.us-,JellalTheMage/Jellals-Server,DarkSuicune/Pokemon-Showdown,PrimalGallade45/Lumen-Pokemon-Showdown,Gold-Solox/Pokemon-Showdown,Zarel/Pokemon-Showdown,megaslowbro1/Pokemon-Showdown,KewlStatics/Alliance,hayleysworld/Pokemon-Showdown,NoahVSGamingYT/Pokemon-Showdown,SerperiorBae/Bae-Showdown,psnsVGC/Wish-Server,ScottehMax/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,kupochu/Pokemon-Showdown,TheManwithskills/Server,ehk12/bigbangtempclone,panpawn/Gold-Server,Irraquated/Pokemon-Showdown,Tesarand/Pokemon-Showdown,LightningStormServer/Lightning-Storm,arkanox/MistShowdown,Darkshadow6/PokeMoon-Creation,HoeenKid/Pokemon-Showdown-Johto,Fusxfaranto/Pokemon-Showdown,catanatron/pokemon-rebalance,Disaster-Area/Pokemon-Showdown,ZeroParadox/BlastBurners,Elveman/RPCShowdownServer,arkanox/MistShowdown,Mystifi/Exiled,LustyAsh/EOS-Master,TheManwithskills/serenity,danpantry/Pokemon-Showdown,SerperiorBae/Bae-Showdown-2,Kill-The-Noise/BlakJack-Boilerplate,ZeroParadox/ugh,Nineage/Origin,Wando94/Spite,TheManwithskills/Dusk--Showdown,aakashrajput/Pokemon-Showdown,Gold-Solox/Pokemon-Showdown,RustServer/Pokemon-Showdown,kotarou3/Krister-Pokemon-Showdown,lFernanl/Zero-Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,MayukhKundu/Flame-Savior,CorruptedHelix/Pokemon-Showdown,Irraquated/EOS-Master,sirDonovan/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,ehk12/clone,AnaRitaTorres/Pokemon-Showdown,comedianchameleon/servertest1,xCrystal/Pokemon-Showdown,ZestOfLife/FestiveLife,KewlStatics/Showdown-Template,TheManwithskills/New-boiler-test,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,Vacate/Pokemon-Showdown,PS-Spectral/Spectral,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,Flareninja/Pokemon-Showdown-1,LightningStormServer/Lightning-Storm,Pikachuun/Pokemon-Showdown,Celecitia/Plux-Pokemon-Showdown,PS-Spectral/Spectral,johtooo/PS,Zipzapadam/Server,DalleTest/Pokemon-Showdown,urkerab/Pokemon-Showdown,TheManwithskills/Server---Thermal,xCrystal/Pokemon-Showdown,Flareninja/Hispano-Pokemon-Showdown,Psyientist/Showdown-Boilerplate,Neosweiss/Pokemon-Showdown,CorruptedHelix/Pokemon-Showdown,Atwar/ServerClassroom,Irraquated/Pokemon-Showdown,Volcos/SpacialGaze,anubhabsen/Pokemon-Showdown,KaitoV4X/Showdown,Flareninja/Lumen-Pokemon-Showdown,KewlStatics/Pokeindia-Codes,PrimalGallade45/Dropp-Pokemon-Showdown,DesoGit/TsunamiPS,lFernanl/Mudkip-Server,Lauc1an/Perulink-Showdown,EienSeiryuu/Pokemon-Showdown,hayleysworld/serenityserver,LightningStormServer/Lightning-Storm,Sora-Server/Sora,Elveman/RPCShowdownServer,yashagl/pokemon,Disaster-Area/Pokemon-Showdown,Pablo000/aaa,Hidden-Mia/Roleplay-PS,sama2/Viridian-Pokemon-Showdown,MayukhKundu/Technogear-Final,yashagl/pokecommunity,Checkinator/Pokemon-Showdown,JennyPRO/Jenny,SubZeroo99/Pokemon-Showdown,Parukia/Pokemon-Showdown,PrimalGallade45/Dropp-Pokemon-Showdown,asdfghjklohhnhn/Pokemon-Showdown,kuroscafe/Showdown-Boilerplate,danpantry/Pokemon-Showdown,SkyeTheFemaleSylveon/Pokemon-Showdown,hayleysworld/asdfasdf,SerperiorBae/BaeShowdown,TbirdClanWish/Pokemon-Showdown,Kill-The-Noise/BlakJack-Boilerplate,abulechu/Dropp-Pokemon-Showdown,Guernouille/Pokemon-Showdown,InvalidDN/Pokemon-Showdown,Pablo000/aaa,Darkshadow6/PokeMoon-Creation,DB898/theregalias,megaslowbro1/Pokemon-Showdown-Server-for-megaslowbro1,ehk12/bigbangtempclone,Tesarand/Pokemon-Showdown,cadaeic/Pokemon-Showdown,NoahVSGamingYT/Pokemon-Showdown,abrulochp/Lumen-Pokemon-Showdown,AbsolitoSweep/Absol-server,Ransei1/Alt,Yggdrasil-League/Yggdrasil,ZeroParadox/BlastBurners,LegendBorned/PS-Boilerplate,zczd/enculer,DalleTest/Pokemon-Showdown,Sora-League/Sora,Raina4uberz/Light-server,QuiteQuiet/Pokemon-Showdown,MeliodasBH/boarhat,svivian/Pokemon-Showdown,Zarel/Pokemon-Showdown,Atwar/server-epilogueleague.rhcloud.com,Parukia/Pokemon-Showdown,abrulochp/Lumen-Pokemon-Showdown,megaslowbro1/Showdown-Server-again,xfix/Pokemon-Showdown,BlazingAura/Showdown-Boilerplate,Pikachuun/Pokemon-Showdown-SMCMDM,iFaZe/SilverZ,DesoGit/Tsunami_PS,Nineage/Origin,TheManwithskills/serenity,Kokonoe-san/Glacia-PS,Hopenub/Pokemon-Showdown,Bryan-0/Pokemon-Showdown,Atwar/ServerClassroom,AustinXII/Pokemon-Showdown,kubetz/Pokemon-Showdown,SerperiorBae/BaeShowdown,Lauc1an/Perulink-Showdown,Legit99/Lightning-Storm-Server,Luobata/Pokemon-Showdown,JellalTheMage/PS-,Vacate/Pokemon-Showdown,SSJGVegito007/Vegito-s-Server,ShowdownHelper/Saffron,lFernanl/Pokemon-Showdown,SerperiorBae/Bae-Showdown-2,hayleysworld/serenityc9,Wando94/Pokemon-Showdown,KewlStatics/Shit,AustinXII/Pokemon-Showdown,gustavo515/gashoro,DesoGit/Tsunami_PS,lFernanl/Lumen-Pokemon-Showdown,azum4roll/Pokemon-Showdown,brettjbush/Pokemon-Showdown,Firestatics/Firestatics46,Pikachuun/Touhoumon-Showdown,Pokemon-Devs/Pokemon-Showdown,Flareninja/Showdown-Boilerplate,VoltStorm/Server-pokemon-showdown,Enigami/Pokemon-Showdown,panpawn/Pokemon-Showdown,Flareninja/Lumen-Pokemon-Showdown,lAlejandro22/lolipoop,CharizardtheFireMage/Showdown-Boilerplate,FakeSloth/Infinite,Ecuacion/Lumen-Pokemon-Showdown,SkyeTheFemaleSylveon/Mudkip-Server,TheFenderStory/Pokemon-Showdown,SerperiorBae/Pokemon-Showdown,QuiteQuiet/Pokemon-Showdown,kuroscafe/Paradox,piiiikachuuu/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,hayleysworld/Pokemon-Showdown,JellalTheMage/PS-,johtooo/PS,SerperiorBae/Pokemon-Showdown,Raina4uberz/Light-server,gustavo515/gashoro,javi501/Lumen-Pokemon-Showdown,TbirdClanWish/Pokemon-Showdown,TheManwithskills/Server,CrestfallPS/Pokemon-Showdown,BuzzyOG/Pokemon-Showdown,AnaRitaTorres/Pokemon-Showdown,MayukhKundu/Pokemon-Domain,yashagl/pokemon-showdown,AvinashSwaminathan/lotus-v2,Pikachuun/Joimmon-Showdown,sama2/Lumen-Pokemon-Showdown,JennyPRO/Jenny,urkerab/Pokemon-Showdown,DarkSuicune/Kakuja-2.0,KaitoV4X/Showdown,kotarou3/Krister-Pokemon-Showdown,RustServer/Pokemon-Showdown,PauLucario/LQP-Server-Showdown,superman8900/Pokemon-Showdown,Legit99/Lightning-Storm-Server,xfix/Pokemon-Showdown,SerperiorBae/Bae-Showdown,k3naan/Pokemon-Showdown,Lord-Haji/SpacialGaze,Ridukuo/Test2,ankailou/Pokemon-Showdown,sama2/Dropp-Pokemon-Showdown,Ridukuo/Test,Parukia/Pokemon-Showdown,Evil-kun/Pokemon-Showdown