fixed bug where an undefined variable could be dereferenced
fixed bug where an undefined variable could be dereferenced

which could cause the server to choke.

leninhasda/Ghost,leonli/ghost,vloom/blog,lukekhamilton/Ghost,handcode7/Ghost,JohnONolan/Ghost,mohanambati/Ghost,Alxandr/Blog,Klaudit/Ghost,rchrd2/Ghost,schematical/Ghost,TryGhost/Ghost,halfdan/Ghost,jin/Ghost,Jonekee/Ghost,mlabieniec/ghost-env,Polyrhythm/dolce,mohanambati/Ghost,tksander/Ghost,sajmoon/Ghost,tyrikio/Ghost,notno/Ghost,dYale/blog,optikalefx/Ghost,nneko/Ghost,delgermurun/Ghost,Elektro1776/javaPress,Remchi/Ghost,netputer/Ghost,InnoD-WebTier/hardboiled_ghost,carlosmtx/Ghost,ivanoats/ivanstorck.com,NamedGod/Ghost,zeropaper/Ghost,DesenTao/Ghost,ladislas/ghost,jamesslock/Ghost,llv22/Ghost,ryanbrunner/crafters,tksander/Ghost,rizkyario/Ghost,praveenscience/Ghost,jamesyothers/Ghost,olsio/Ghost,ManRueda/Ghost,daihuaye/Ghost,weareleka/blog,flpms/ghost-ad,PepijnSenders/whatsontheotherside,Netazoic/bad-gateway,blankmaker/Ghost,TryGhost/Ghost,veyo-care/Ghost,thinq4yourself/Unmistakable-Blog,pbevin/Ghost,techfashionlife/blog,LeandroNascimento/Ghost,epicmiller/pages,edurangel/Ghost,kortemy/Ghost,dqj/Ghost,laispace/laiblog,mikecastro26/ghost-custom,bosung90/Ghost,r14r/fork_nodejs_ghost,PeterCxy/Ghost,Loyalsoldier/Ghost,greyhwndz/Ghost,hoxoa/Ghost,Azzurrio/Ghost,alanmoo/moo-on-the-web,yangli1990/Ghost,jgillich/Ghost,sfpgmr/Ghost,ashishapy/ghostpy,Coding-House/Ghost,UnbounDev/Ghost,dggr/Ghost-sr,tadityar/Ghost,tmp-reg/Ghost,acburdine/Ghost,Jonekee/Ghost,edsadr/Ghost,thehogfather/Ghost,davegw/dgw-website,BayPhillips/Ghost,tanbo800/Ghost,VillainyStudios/Ghost,mattvh/Ghost,e10/Ghost,AnthonyCorrado/Ghost,ManRueda/manrueda-blog,bitjson/Ghost,mohanambati/Ghost,davidblurton/salmondesign-old,mattchupp/blog,tmp-reg/Ghost,mayconxhh/Ghost,jiangjian-zh/Ghost,cicorias/Ghost,acburdine/Ghost,katiefenn/Ghost,velimir0xff/Ghost,diogogmt/Ghost,thomasalrin/Ghost,rito/Ghost,kmeurer/Ghost,imjerrybao/Ghost,francisco-filho/Ghost,velimir0xff/Ghost,ClarkGH/Ghost,daimaqiao/Ghost-Bridge,Jai-Chaudhary/Ghost,AlexKVal/Ghost,ckousik/Ghost,letsjustfixit/Ghost,Gargol/Ghost,yujingz/yujignz.com,floofydoug/Ghost,JonathanZWhite/Ghost,Yarov/yarov,zumobi/Ghost,atandon/Ghost,PepijnSenders/whatsontheotherside,melissaroman/ghost-blog,tanbo800/Ghost,ngosinafrica/SiteForNGOs,dYale/blog,novaugust/Ghost,v3rt1go/Ghost,bosung90/Ghost,tuan/Ghost,patterncoder/patterncoder,Elektro1776/javaPress,obsoleted/Ghost,virtuallyearthed/Ghost,jamesslock/Ghost,javimolla/Ghost,AlexKVal/Ghost,wspandihai/Ghost,epicmiller/pages,Alxandr/Blog,ASwitlyk/Ghost,kaychaks/kaushikc.org,sebgie/Ghost,claudiordgz/Ghost,FredericBernardo/Ghost,etdev/blog,metadevfoundation/Ghost,jomahoney/Ghost,kortemy/Ghost,Trendy/Ghost,exsodus3249/Ghost,JulienBrks/Ghost,pedroha/Ghost,ghostchina/website,Sebastian1011/Ghost,kwangkim/Ghost,pathayes/FoodBlog,jacostag/Ghost,alecho/Ghost,ballPointPenguin/Ghost,mattchupp/blog,ananthhh/Ghost,shrimpy/Ghost,patrickdbakke/ghost-spa,PaulBGD/Ghost-Plus,ThorstenHans/Ghost,madole/diverse-learners,shannonshsu/Ghost,RoopaS/demo-intern,sceltoas/Ghost,ThorstenHans/Ghost,JohnONolan/Ghost,cwonrails/Ghost,pbevin/Ghost,lethalbrains/Ghost,thomasalrin/Ghost,mhhf/ghost-latex,petersucks/blog,riyadhalnur/Ghost,mttschltz/ghostblog,wemakeweb/Ghost,sergeylukin/Ghost,no1lov3sme/Ghost,makapen/Ghost,julianromera/Ghost,Jai-Chaudhary/Ghost,SachaG/bjjbot-blog,obsoleted/Ghost,e10/Ghost,pollbox/ghostblog,sfpgmr/Ghost,javorszky/Ghost,skmezanul/Ghost,sunh3/Ghost,Feitianyuan/Ghost,uploadcare/uploadcare-ghost-demo,theonlypat/Ghost,barbastan/Ghost,BayPhillips/Ghost,javimolla/Ghost,skmezanul/Ghost,ManRueda/Ghost,10hacks/blog,NovaDevelopGroup/Academy,Yarov/yarov,ericbenson/GhostAzureSetup,omaracrystal/Ghost,manishchhabra/Ghost,notno/Ghost,NamedGod/Ghost,TribeMedia/Ghost,NikolaiIvanov/Ghost,claudiordgz/Ghost,jorgegilmoreira/ghost,r1N0Xmk2/Ghost,singular78/Ghost,letsjustfixit/Ghost,sangcu/Ghost,rafaelstz/Ghost,syaiful6/Ghost,NovaDevelopGroup/Academy,denzelwamburu/denzel.xyz,ygbhf/Ghost,janvt/Ghost,achimos/ghost_as,morficus/Ghost,karmakaze/Ghost,disordinary/Ghost,alecho/Ghost,k2byew/Ghost,bisoe/Ghost,SkynetInc/steam,rtorino/me-etc,neynah/GhostSS,kevinansfield/Ghost,lukw00/Ghost,davidenq/Ghost-Blog,r14r/fork_nodejs_ghost,mtvillwock/Ghost,lf2941270/Ghost,bisoe/Ghost,denzelwamburu/denzel.xyz,gcamana/Ghost,Loyalsoldier/Ghost,cysys/ghost-openshift,ryanbrunner/crafters,FredericBernardo/Ghost,rollokb/Ghost,etanxing/Ghost,dymx101/Ghost,greenboxindonesia/Ghost,PDXIII/Ghost-FormMailer,PDXIII/Ghost-FormMailer,jorgegilmoreira/ghost,jeonghwan-kim/Ghost,ghostchina/Ghost.zh,JohnONolan/Ghost,Japh/shortcoffee,darvelo/Ghost,MrMaksimize/sdg1,laispace/laiblog,nakamuraapp/new-ghost,ddeveloperr/Ghost,hnarayanan/narayanan.co,cysys/ghost-openshift,medialab/Ghost,adam-paterson/blog,nmukh/Ghost,jaguerra/Ghost,ygbhf/Ghost,katrotz/blog.katrotz.space,mlabieniec/ghost-env,daimaqiao/Ghost-Bridge,ladislas/ghost,Gargol/Ghost,davidmenger/nodejsfan,ineitzke/Ghost,carlyledavis/Ghost,ryansukale/ux.ryansukale.com,kaychaks/kaushikc.org,codeincarnate/Ghost,memezilla/Ghost,shannonshsu/Ghost,jin/Ghost,rito/Ghost,BlueHatbRit/Ghost,Sing-Li/GhostSS,vloom/blog,theonlypat/Ghost,choskim/GhostAzure,Kaenn/Ghost,morficus/Ghost,zackslash/Ghost,developer-prosenjit/Ghost,tandrewnichols/ghost,maverickcoders/blog,ashishapy/ghostpy,GroupxDev/javaPress,exsodus3249/Ghost,netputer/Ghost,ErisDS/Ghost,olsio/Ghost,ErisDS/Ghost,kaiqigong/Ghost,dbalders/Ghost,Dnlyc/Ghost,gabfssilva/Ghost,mnitchie/Ghost,uniqname/everydaydelicious,tyrikio/Ghost,tidyui/Ghost,flpms/ghost-ad,woodyrew/Ghost,syaiful6/Ghost,RufusMbugua/TheoryOfACoder,phillipalexander/Ghost,zuphu/GhostBlog,Xibao-Lv/Ghost,aschmoe/jesse-ghost-app,dbalders/Ghost,thinq4yourself/Unmistakable-Blog,devleague/uber-hackathon,camilodelvasto/herokughost,KnowLoading/Ghost,schematical/Ghost,aexmachina/blog-old,aroneiermann/GhostJade,dgem/Ghost,consoleblog/consoleblog,omaracrystal/Ghost,UsmanJ/Ghost,PeterCxy/Ghost,Netazoic/bad-gateway,rouanw/Ghost,Feitianyuan/Ghost,allanjsx/Ghost,bbmepic/Ghost,gabfssilva/Ghost,hawkrives/Wraith,mtvillwock/Ghost,bastianbin/Ghost,allspiritseve/mindlikewater,edsadr/Ghost,schneidmaster/theventriloquist.us,lanffy/Ghost,devleague/uber-hackathon,yujingz/yujignz.com,xiongjungit/Ghost,wemakeweb/Ghost,ryansukale/ux.ryansukale.com,camilodelvasto/localghost,Dnlyc/Ghost,ddeveloperr/Ghost,rafaelstz/Ghost,prosenjit-itobuz/Ghost,mnitchie/Ghost,cicorias/Ghost,arvidsvensson/Ghost,jgillich/Ghost,cncodog/Ghost-zh-codog,JonSmith/Ghost,pedroha/Ghost,LeandroNascimento/Ghost,kolorahl/Ghost,achimos/ghost_as,bigertech/Ghost,rmoorman/Ghost,djensen47/Ghost,stridespace/Ghost,karmakaze/Ghost,melissaroman/ghost-blog,mdbw/ghost,smaty1/Ghost,no1lov3sme/Ghost,davidblurton/salmondesign-old,jorgegilmoreira/ghost,maverickcoders/blog,pollbox/ghostblog,jeonghwan-kim/Ghost,Remchi/Ghost,davidenq/Ghost-Blog,AileenCGN/Ghost,lukw00/Ghost,darvelo/Ghost,stridespace/Ghost,diogogmt/Ghost,benstoltz/Ghost,lethalbrains/Ghost,SachaG/bjjbot-blog,nneko/Ghost,lukaszklis/Ghost,wangjun/Ghost,rmoorman/Ghost,bsansouci/Ghost,klinker-apps/ghost,johngeorgewright/blog.j-g-w.info,shrimpy/Ghost,anijap/PhotoGhost,vainglori0us/urban-fortnight,qdk0901/Ghost,DesenTao/Ghost,dylanchernick/ghostblog,GroupxDev/javaPress,mdbw/ghost,Empeeric/justanidea,TribeMedia/Ghost,chris-yoon90/Ghost,wspandihai/Ghost,francisco-filho/Ghost,ljhsai/Ghost,sankumsek/Ghost-ashram,bastianbin/Ghost,ITJesse/Ghost-zh,avh4/blog.avh4.net,alexandrachifor/Ghost,UnbounDev/Ghost,KnowLoading/Ghost,vainglori0us/urban-fortnight,sajmoon/Ghost,aroneiermann/GhostJade,lf2941270/Ghost,choskim/Ghost,jiangjian-zh/Ghost,ivantedja/ghost,MadeOnMars/Ghost,akveo/akveo-blog,UsmanJ/Ghost,bitjson/Ghost,hnq90/Ghost,augbog/Ghost,Smile42RU/Ghost,singular78/Ghost,phillipalexander/Ghost,blankmaker/Ghost,julianromera/Ghost,halfdan/Ghost,schneidmaster/theventriloquist.us,flomotlik/Ghost,optikalefx/Ghost,choskim/Ghost,djensen47/Ghost,cgiffard/Ghost,yundt/seisenpenji,dylanchernick/ghostblog,Romdeau/Ghost,xiongjungit/Ghost,vishnuharidas/Ghost,TryGhost/Ghost,BlueHatbRit/Ghost,pathayes/FoodBlog,klinker-apps/ghost,cwonrails/Ghost,jomofrodo/ccb-ghost,ngosinafrica/SiteForNGOs,ManRueda/Ghost,delgermurun/Ghost,letsjustfixit/Ghost,RufusMbugua/TheoryOfACoder,Kaenn/Ghost,duyetdev/islab,liftup/ghost,jaswilli/Ghost,ananthhh/Ghost,kevinansfield/Ghost,fredeerock/atlabghost,adam-paterson/blog,lcamacho/Ghost,cysys/ghost-openshift,camilodelvasto/herokughost,tadityar/Ghost,sunh3/Ghost,sergeylukin/Ghost,leonli/ghost,dqj/Ghost,VillainyStudios/Ghost,panezhang/Ghost,uploadcare/uploadcare-ghost-demo,hoxoa/Ghost,carlyledavis/Ghost,IbrahimAmin/Ghost,cobbspur/Ghost,anijap/PhotoGhost,medialab/Ghost,zhiyishou/Ghost,zumobi/Ghost,devleague/uber-hackathon,etdev/blog,wallmarkets/Ghost,influitive/crafters,kwangkim/Ghost,jparyani/GhostSS,situkangsayur/Ghost,veyo-care/Ghost,ignasbernotas/nullifer,llv22/Ghost,Bunk/Ghost,mayconxhh/Ghost,neynah/GhostSS,rizkyario/Ghost,dggr/Ghost-sr,dai-shi/Ghost,Shauky/Ghost,jaswilli/Ghost,metadevfoundation/Ghost,hawkrives/Wraith,YY030913/Ghost,hyokosdeveloper/Ghost,developer-prosenjit/Ghost,Kikobeats/Ghost,load11/ghost,nmukh/Ghost,rwjblue/Ghost,barbastan/Ghost,jaguerra/Ghost,johngeorgewright/blog.j-g-w.info,ineitzke/Ghost,SkynetInc/steam,Netazoic/bad-gateway,Brunation11/Ghost,cncodog/Ghost-zh-codog,johnnymitch/Ghost,Trendy/Ghost,STANAPO/Ghost,handcode7/Ghost,telco2011/Ghost,Rovak/Ghost,PaulBGD/Ghost-Plus,GarrethDottin/Habits-Design,hnarayanan/narayanan.co,lowkeyfred/Ghost,trepafi/ghost-base,cncodog/Ghost-zh-codog,Elektro1776/javaPress,ManRueda/manrueda-blog,mlabieniec/ghost-env,imjerrybao/Ghost,eduardojmatos/eduardomatos.me,Bunk/Ghost,kmeurer/GhostAzureSetup,rouanw/Ghost,prosenjit-itobuz/Ghost,pensierinmusica/Ghost,jiachenning/Ghost,liftup/ghost,ryanorsinger/tryghost,gleneivey/Ghost,krahman/Ghost,MadeOnMars/Ghost,NovaDevelopGroup/Academy,rameshponnada/Ghost,qdk0901/Ghost,skleung/blog,mhhf/ghost-latex,stridespace/Ghost,ErisDS/Ghost,wallmarkets/Ghost,axross/ghost,ballPointPenguin/Ghost,Brunation11/Ghost,tchapi/igneet-blog,ASwitlyk/Ghost,freele/ghost,NikolaiIvanov/Ghost,NodeJSBarenko/Ghost,cwonrails/Ghost,lanffy/Ghost,cqricky/Ghost,davegw/dgw-website,andrewconnell/Ghost,augbog/Ghost,ClarkGH/Ghost,leninhasda/Ghost,edurangel/Ghost,allspiritseve/mindlikewater,jomofrodo/ccb-ghost,v3rt1go/Ghost,yanntech/Ghost,Romdeau/Ghost,AnthonyCorrado/Ghost,trunk-studio/Ghost,Kaenn/Ghost,vainglori0us/urban-fortnight,Xibao-Lv/Ghost,scopevale/wethepeopleweb.org,ITJesse/Ghost-zh,maverickcoders/blog,jacostag/Ghost,Klaudit/Ghost,davidenq/Ghost-Blog,situkangsayur/Ghost,kortemy/Ghost,arvidsvensson/Ghost,dggr/Ghost-sr,ManRueda/manrueda-blog,jparyani/GhostSS,andrewconnell/Ghost,Sebastian1011/Ghost,influitive/crafters,gleneivey/Ghost,yundt/seisenpenji,ericbenson/GhostAzureSetup,Rovak/Ghost,duyetdev/islab,jiachenning/Ghost,lukekhamilton/Ghost,flomotlik/Ghost,floofydoug/Ghost,bsansouci/Ghost,hyokosdeveloper/Ghost,Aaron1992/Ghost,kolorahl/Ghost,GarrethDottin/Habits-Design,beautyOfProgram/Ghost,disordinary/Ghost,chris-yoon90/Ghost,k2byew/Ghost,etanxing/Ghost,Kikobeats/Ghost,choskim/GhostAzure,pensierinmusica/Ghost,smaty1/Ghost,Azzurrio/Ghost,ckousik/Ghost,JonathanZWhite/Ghost,neynah/GhostSS,weareleka/blog,ghostchina/Ghost-zh,ghostchina/Ghost-zh,jparyani/GhostSS,woodyrew/Ghost,thehogfather/Ghost,smedrano/Ghost,daihuaye/Ghost,greyhwndz/Ghost,skleung/blog,axross/ghost,jomofrodo/ccb-ghost,fredeerock/atlabghost,zeropaper/Ghost,janvt/Ghost,camilodelvasto/localghost,wangjun/Ghost,memezilla/Ghost,Netazoic/bad-gateway,gcamana/Ghost,katrotz/blog.katrotz.space,JonSmith/Ghost,icowan/Ghost,petersucks/blog,novaugust/Ghost,zhiyishou/Ghost,rollokb/Ghost,Japh/shortcoffee,10hacks/blog,Japh/Ghost,javorszky/Ghost,chevex/undoctrinate,atandon/Ghost,carlosmtx/Ghost,rchrd2/Ghost,dbalders/Ghost,singular78/Ghost,Alxandr/Blog,beautyOfProgram/Ghost,makapen/Ghost,InnoD-WebTier/hardboiled_ghost,yanntech/Ghost,jgladch/taskworksource,yangli1990/Ghost,telco2011/Ghost,trunk-studio/Ghost,laispace/laiblog,aschmoe/jesse-ghost-app,ivanoats/ivanstorck.com,lukaszklis/Ghost,tidyui/Ghost,dymx101/Ghost,dai-shi/Ghost,psychobunny/Ghost,tandrewnichols/ghost,daimaqiao/Ghost-Bridge,benstoltz/Ghost,ignasbernotas/nullifer,acburdine/Ghost,oimou-house/blog,codeincarnate/Ghost,vlmhco/personal-blog,diancloud/Ghost,allanjsx/Ghost,hilerchyn/Ghost,madole/diverse-learners,kmeurer/Ghost,ghostchina/Ghost.zh,zackslash/Ghost,kevinansfield/Ghost,techfashionlife/blog,rizkyario/Ghost,sceltoas/Ghost,hnq90/Ghost,dgem/Ghost,akveo/akveo-blog,praveenscience/Ghost,smedrano/Ghost,lowkeyfred/Ghost,JulienBrks/Ghost,icowan/Ghost,STANAPO/Ghost,psychobunny/Ghost,Japh/Ghost,leonli/ghost,jomahoney/Ghost,telco2011/Ghost,riyadhalnur/Ghost,mttschltz/ghostblog,novaugust/Ghost,kaiqigong/Ghost,Smile42RU/Ghost,sangcu/Ghost,johnnymitch/Ghost,bbmepic/Ghost,mattvh/Ghost,manishchhabra/Ghost,Coding-House/Ghost,r1N0Xmk2/Ghost,diancloud/Ghost,ljhsai/Ghost,patterncoder/patterncoder,InnoD-WebTier/hardboiled_ghost,cqricky/Ghost,GroupxDev/javaPress,allanjsx/Ghost,Kikobeats/Ghost,davidmenger/nodejsfan,choskim/ghost_exp,sebgie/Ghost,greenboxindonesia/Ghost,jamesyothers/Ghost,sifatsultan/js-ghost,virtuallyearthed/Ghost,YY030913/Ghost,rameshponnada/Ghost,panezhang/Ghost,sifatsultan/js-ghost,load11/ghost,hilerchyn/Ghost,sebgie/Ghost,IbrahimAmin/Ghost