Added check for billing_address.nil? in checkout.rb
Added check for billing_address.nil? in checkout.rb

[#1015 state:resolved]

tancnle/spree,project-eutopia/spree,Boomkat/spree,alejandromangione/spree,vinayvinsol/spree,pjmj777/spree,gregoryrikson/spree-sample,sliaquat/spree,dandanwei/spree,patdec/spree,rbngzlv/spree,adaddeo/spree,carlesjove/spree,edgward/spree,orenf/spree,robodisco/spree,thogg4/spree,pervino/solidus,alvinjean/spree,Nevensoft/spree,mleglise/spree,welitonfreitas/spree,radarseesradar/spree,builtbybuffalo/spree,Migweld/spree,alvinjean/spree,edgward/spree,omarsar/spree,rakibulislam/spree,radarseesradar/spree,preston-scott/spree,softr8/spree,KMikhaylovCTG/spree,ahmetabdi/spree,kewaunited/spree,alejandromangione/spree,FadliKun/spree,vcavallo/spree,miyazawatomoka/spree,jasonfb/spree,reidblomquist/spree,surfdome/spree,builtbybuffalo/spree,locomotivapro/spree,AgilTec/spree,codesavvy/sandbox,moneyspyder/spree,FadliKun/spree,ayb/spree,keatonrow/spree,xuewenfei/solidus,reidblomquist/spree,jsurdilla/solidus,omarsar/spree,LBRapid/spree,pervino/spree,TrialGuides/spree,dafontaine/spree,delphsoft/spree-store-ballchair,CiscoCloud/spree,KMikhaylovCTG/spree,adaddeo/spree,njerrywerry/spree,firman/spree,sunny2601/spree,alejandromangione/spree,surfdome/spree,Antdesk/karpal-spree,Engeltj/spree,bricesanchez/spree,tesserakt/clean_spree,berkes/spree,archSeer/spree,shaywood2/spree,xuewenfei/solidus,Hawaiideveloper/shoppingcart,alepore/spree,forkata/solidus,adaddeo/spree,forkata/solidus,lzcabrera/spree-1-3-stable,Boomkat/spree,progsri/spree,locomotivapro/spree,jaspreet21anand/spree,Antdesk/karpal-spree,thogg4/spree,quentinuys/spree,Senjai/spree,hoanghiep90/spree,Hates/spree,shekibobo/spree,volpejoaquin/spree,jspizziri/spree,watg/spree,jeffboulet/spree,thogg4/spree,kitwalker12/spree,yushine/spree,vivekamn/spree,dafontaine/spree,welitonfreitas/spree,caiqinghua/spree,cutefrank/spree,vcavallo/spree,TrialGuides/spree,brchristian/spree,athal7/solidus,carlesjove/spree,reinaris/spree,reinaris/spree,miyazawatomoka/spree,dandanwei/spree,mindvolt/spree,RatioClothing/spree,quentinuys/spree,TimurTarasenko/spree,degica/spree,keatonrow/spree,zamiang/spree,jasonfb/spree,wolfieorama/spree,bonobos/solidus,freerunningtech/spree,woboinc/spree,Arpsara/solidus,carlesjove/spree,siddharth28/spree,delphsoft/spree-store-ballchair,jaspreet21anand/spree,vmatekole/spree,pervino/spree,jsurdilla/solidus,pjmj777/spree,rajeevriitm/spree,NerdsvilleCEO/spree,jparr/spree,JuandGirald/spree,tailic/spree,assembledbrands/spree,HealthWave/spree,jaspreet21anand/spree,xuewenfei/solidus,delphsoft/spree-store-ballchair,azclick/spree,hifly/spree,lsirivong/solidus,reidblomquist/spree,kewaunited/spree,camelmasa/spree,sunny2601/spree,JuandGirald/spree,Arpsara/solidus,reinaris/spree,project-eutopia/spree,Hates/spree,patdec/spree,useiichi/spree,SadTreeFriends/spree,kewaunited/spree,gautamsawhney/spree,madetech/spree,karlitxo/spree,ujai/spree,miyazawatomoka/spree,pulkit21/spree,surfdome/spree,orenf/spree,berkes/spree,gautamsawhney/spree,edgward/spree,wolfieorama/spree,sideci-sample/sideci-sample-spree,ckk-scratch/solidus,Antdesk/karpal-spree,biagidp/spree,degica/spree,grzlus/solidus,vulk/spree,LBRapid/spree,woboinc/spree,KMikhaylovCTG/spree,bonobos/solidus,trigrass2/spree,vinayvinsol/spree,miyazawatomoka/spree,jsurdilla/solidus,vinayvinsol/spree,sfcgeorge/spree,AgilTec/spree,derekluo/spree,dafontaine/spree,jspizziri/spree,CJMrozek/spree,Hates/spree,urimikhli/spree,Kagetsuki/spree,sunny2601/spree,firman/spree,sfcgeorge/spree,codesavvy/sandbox,kitwalker12/spree,alvinjean/spree,forkata/solidus,Ropeney/spree,grzlus/solidus,jimblesm/spree,yiqing95/spree,cutefrank/spree,Arpsara/solidus,siddharth28/spree,jordan-brough/spree,azclick/spree,maybii/spree,abhishekjain16/spree,hifly/spree,PhoenixTeam/spree_phoenix,pervino/solidus,rakibulislam/spree,priyank-gupta/spree,grzlus/spree,mleglise/spree,groundctrl/spree,LBRapid/spree,camelmasa/spree,progsri/spree,lsirivong/spree,ckk-scratch/solidus,Nevensoft/spree,pulkit21/spree,robodisco/spree,lyzxsc/spree,Senjai/spree,ramkumar-kr/spree,grzlus/spree,grzlus/solidus,jhawthorn/spree,azclick/spree,trigrass2/spree,hifly/spree,Lostmyname/spree,builtbybuffalo/spree,azranel/spree,dotandbo/spree,HealthWave/spree,tomash/spree,nooysters/spree,njerrywerry/spree,bjornlinder/Spree,Ropeney/spree,freerunningtech/spree,beni55/spree,useiichi/spree,zamiang/spree,woboinc/spree,grzlus/solidus,fahidnasir/spree,ckk-scratch/solidus,AgilTec/spree,dandanwei/spree,Nevensoft/spree,vinayvinsol/spree,TimurTarasenko/spree,raow/spree,project-eutopia/spree,DynamoMTL/spree,NerdsvilleCEO/spree,Mayvenn/spree,knuepwebdev/FloatTubeRodHolders,agient/agientstorefront,brchristian/spree,Mayvenn/spree,shekibobo/spree,maybii/spree,shioyama/spree,sliaquat/spree,SadTreeFriends/spree,lyzxsc/spree,gotoAndBliss/True-Jersey,shioyama/spree,sliaquat/spree,yushine/spree,lsirivong/spree,agient/agientstorefront,surfdome/spree,Boomkat/spree,pjmj777/spree,vinsol/spree,beni55/spree,devilcoders/solidus,zaeznet/spree,gotoAndBliss/True-Jersey,rbngzlv/spree,hifly/spree,vmatekole/spree,jimblesm/spree,jordan-brough/spree,tesserakt/clean_spree,lyzxsc/spree,richardnuno/solidus,progsri/spree,kitwalker12/spree,brchristian/spree,siddharth28/spree,vmatekole/spree,mindvolt/spree,softr8/spree,shioyama/spree,raow/spree,Mayvenn/spree,ujai/spree,watg/spree,agient/agientstorefront,alepore/spree,yushine/spree,volpejoaquin/spree,RatioClothing/spree,net2b/spree,rajeevriitm/spree,forkata/solidus,athal7/solidus,jspizziri/spree,DynamoMTL/spree,codesavvy/sandbox,lyzxsc/spree,jeffboulet/spree,AgilTec/spree,Hates/spree,zamiang/spree,ahmetabdi/spree,raow/spree,DarkoP/spree,KMikhaylovCTG/spree,nooysters/spree,Lostmyname/spree,zaeznet/spree,Ropeney/spree,vinsol/spree,quentinuys/spree,priyank-gupta/spree,bricesanchez/spree,useiichi/spree,imella/spree,vcavallo/spree,jimblesm/spree,vcavallo/spree,progsri/spree,jeffboulet/spree,abhishekjain16/spree,odk211/spree,reinaris/spree,moneyspyder/spree,moneyspyder/spree,Engeltj/spree,shekibobo/spree,wolfieorama/spree,azclick/spree,gregoryrikson/spree-sample,assembledbrands/spree,jparr/spree,groundctrl/spree,piousbox/spree,shekibobo/spree,priyank-gupta/spree,fahidnasir/spree,NerdsvilleCEO/spree,jordan-brough/solidus,welitonfreitas/spree,Hawaiideveloper/shoppingcart,piousbox/spree,Machpowersystems/spree_mach,jparr/spree,raow/spree,StemboltHQ/spree,RatioClothing/spree,pervino/solidus,jspizziri/spree,moneyspyder/spree,maybii/spree,jasonfb/spree,PhoenixTeam/spree_phoenix,Engeltj/spree,APohio/spree,CJMrozek/spree,archSeer/spree,SadTreeFriends/spree,delphsoft/spree-store-ballchair,Machpowersystems/spree_mach,scottcrawford03/solidus,APohio/spree,rajeevriitm/spree,watg/spree,useiichi/spree,volpejoaquin/spree,net2b/spree,APohio/spree,DarkoP/spree,berkes/spree,robodisco/spree,alepore/spree,bonobos/solidus,PhoenixTeam/spree_phoenix,mleglise/spree,omarsar/spree,JDutil/spree,fahidnasir/spree,cutefrank/spree,njerrywerry/spree,Migweld/spree,gregoryrikson/spree-sample,vmatekole/spree,tesserakt/clean_spree,kewaunited/spree,ujai/spree,Senjai/solidus,codesavvy/sandbox,lsirivong/solidus,cutefrank/spree,alejandromangione/spree,Mayvenn/spree,imella/spree,scottcrawford03/solidus,azranel/spree,Machpowersystems/spree_mach,hoanghiep90/spree,Senjai/solidus,vinsol/spree,locomotivapro/spree,Lostmyname/spree,Migweld/spree,calvinl/spree,archSeer/spree,locomotivapro/spree,DynamoMTL/spree,lzcabrera/spree-1-3-stable,tailic/spree,jsurdilla/solidus,grzlus/spree,omarsar/spree,robodisco/spree,caiqinghua/spree,Engeltj/spree,JDutil/spree,bricesanchez/spree,net2b/spree,devilcoders/solidus,devilcoders/solidus,pervino/spree,joanblake/spree,njerrywerry/spree,knuepwebdev/FloatTubeRodHolders,judaro13/spree-fork,shaywood2/spree,archSeer/spree,calvinl/spree,athal7/solidus,mindvolt/spree,firman/spree,builtbybuffalo/spree,madetech/spree,joanblake/spree,radarseesradar/spree,joanblake/spree,vulk/spree,jhawthorn/spree,madetech/spree,ahmetabdi/spree,CiscoCloud/spree,derekluo/spree,vivekamn/spree,richardnuno/solidus,derekluo/spree,ramkumar-kr/spree,wolfieorama/spree,dotandbo/spree,yiqing95/spree,trigrass2/spree,jordan-brough/solidus,tancnle/spree,JuandGirald/spree,ramkumar-kr/spree,pervino/solidus,pulkit21/spree,ahmetabdi/spree,freerunningtech/spree,bjornlinder/Spree,agient/agientstorefront,zaeznet/spree,CJMrozek/spree,judaro13/spree-fork,shaywood2/spree,sunny2601/spree,rakibulislam/spree,bonobos/solidus,JuandGirald/spree,lsirivong/solidus,tailic/spree,tesserakt/clean_spree,biagidp/spree,TrialGuides/spree,yiqing95/spree,xuewenfei/solidus,athal7/solidus,rbngzlv/spree,reidblomquist/spree,vulk/spree,groundctrl/spree,sfcgeorge/spree,Ropeney/spree,lsirivong/solidus,caiqinghua/spree,yomishra/pce,StemboltHQ/spree,project-eutopia/spree,brchristian/spree,camelmasa/spree,DarkoP/spree,thogg4/spree,keatonrow/spree,abhishekjain16/spree,trigrass2/spree,piousbox/spree,gautamsawhney/spree,siddharth28/spree,mleglise/spree,sliaquat/spree,Senjai/solidus,CiscoCloud/spree,josephholsten/plain-sight,piousbox/spree,Nevensoft/spree,StemboltHQ/spree,firman/spree,CiscoCloud/spree,gregoryrikson/spree-sample,richardnuno/solidus,quentinuys/spree,Senjai/solidus,ramkumar-kr/spree,FadliKun/spree,tomash/spree,DynamoMTL/spree,HealthWave/spree,pervino/spree,ayb/spree,jparr/spree,josephholsten/plain-sight,urimikhli/spree,azranel/spree,sfcgeorge/spree,abhishekjain16/spree,welitonfreitas/spree,patdec/spree,shaywood2/spree,ayb/spree,tomash/spree,TimurTarasenko/spree,adaddeo/spree,JDutil/spree,lsirivong/spree,sideci-sample/sideci-sample-spree,jaspreet21anand/spree,rakibulislam/spree,beni55/spree,dandanwei/spree,nooysters/spree,patdec/spree,richardnuno/solidus,Migweld/spree,maybii/spree,tomash/spree,odk211/spree,DarkoP/spree,fahidnasir/spree,dotandbo/spree,bjornlinder/Spree,zamiang/spree,Hawaiideveloper/shoppingcart,odk211/spree,dotandbo/spree,APohio/spree,softr8/spree,vinsol/spree,ayb/spree,Arpsara/solidus,hoanghiep90/spree,biagidp/spree,keatonrow/spree,pulkit21/spree,groundctrl/spree,ckk-scratch/solidus,Kagetsuki/spree,karlitxo/spree,camelmasa/spree,Senjai/spree,gautamsawhney/spree,mindvolt/spree,assembledbrands/spree,jordan-brough/solidus,alvinjean/spree,carlesjove/spree,odk211/spree,bryanmtl/spree_clear2pay,Kagetsuki/spree,derekluo/spree,rajeevriitm/spree,scottcrawford03/solidus,Kagetsuki/spree,radarseesradar/spree,jimblesm/spree,jeffboulet/spree,Boomkat/spree,priyank-gupta/spree,azranel/spree,yomishra/pce,knuepwebdev/FloatTubeRodHolders,degica/spree,berkes/spree,zaeznet/spree,tancnle/spree,FadliKun/spree,devilcoders/solidus,hoanghiep90/spree,calvinl/spree,karlitxo/spree,grzlus/spree,calvinl/spree,jordan-brough/spree,TrialGuides/spree,beni55/spree,yomishra/pce,PhoenixTeam/spree_phoenix,sideci-sample/sideci-sample-spree,Lostmyname/spree,Hawaiideveloper/shoppingcart,orenf/spree,SadTreeFriends/spree,tancnle/spree,CJMrozek/spree,TimurTarasenko/spree,judaro13/spree-fork,yushine/spree,nooysters/spree,lsirivong/spree,dafontaine/spree,urimikhli/spree,lzcabrera/spree-1-3-stable,vulk/spree,orenf/spree,yiqing95/spree,NerdsvilleCEO/spree,jhawthorn/spree,madetech/spree,joanblake/spree,scottcrawford03/solidus,imella/spree,caiqinghua/spree,karlitxo/spree,net2b/spree,edgward/spree,jasonfb/spree,JDutil/spree,volpejoaquin/spree,jordan-brough/solidus,preston-scott/spree,softr8/spree,sanjay1185/mystore,rbngzlv/spree