Fix bizarre type error within first()
Fix bizarre type error within first()

Pingco/ReactiveCocoa,JohnJin007/ReactiveCocoa,DongDongDongDong/ReactiveCocoa,sujeking/ReactiveCocoa,SuPair/ReactiveCocoa,rpowelll/ReactiveCocoa,OnTheWay1988/ReactiveCocoa,cnbin/ReactiveCocoa,ddc391565320/ReactiveCocoa,Juraldinio/ReactiveCocoa,KuPai32G/ReactiveCocoa,dullgrass/ReactiveCocoa,j364960953/ReactiveCocoa,msdgwzhy6/ReactiveCocoa,AlanJN/ReactiveCocoa,brasbug/ReactiveCocoa,ericzhou2008/ReactiveCocoa,xumaolin/ReactiveCocoa,jackywpy/ReactiveCocoa,ShawnLeee/ReactiveCocoa,ohwutup/ReactiveCocoa,WEIBP/ReactiveCocoa,xiaoliyang/ReactiveCocoa,Rupert-RR/ReactiveCocoa,victorlin/ReactiveCocoa,CCOOOOLL/ReactiveCocoa,sandyway/ReactiveCocoa,victorlin/ReactiveCocoa,eyu1988/ReactiveCocoa,takeshineshiro/ReactiveCocoa,dullgrass/ReactiveCocoa,cstars135/ReactiveCocoa,Pingco/ReactiveCocoa,taylormoonxu/ReactiveCocoa,zhaoguohui/ReactiveCocoa,dskatz22/ReactiveCocoa,xiaoliyang/ReactiveCocoa,ddc391565320/ReactiveCocoa,tonyli508/ReactiveCocoa,tornade0913/ReactiveCocoa,Ricowere/ReactiveCocoa,xulibao/ReactiveCocoa,victorlin/ReactiveCocoa,tonyli508/ReactiveCocoa,imkerberos/ReactiveCocoa,nickcheng/ReactiveCocoa,natestedman/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,zxq3220122/ReactiveCocoa,yonekawa/ReactiveCocoa,Eveian/ReactiveCocoa,PSPDFKit-labs/ReactiveCocoa,mtxs007/ReactiveCocoa,Ricowere/ReactiveCocoa,SanChain/ReactiveCocoa,windgo/ReactiveCocoa,xiaobing2007/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,tzongw/ReactiveCocoa,terry408911/ReactiveCocoa,cogddo/ReactiveCocoa,esttorhe/ReactiveCocoa,PSPDFKit-labs/ReactiveCocoa,terry408911/ReactiveCocoa,qq644531343/ReactiveCocoa,leichunfeng/ReactiveCocoa,zhukaixy/ReactiveCocoa,lixar/ReactiveCocoa,Ricowere/ReactiveCocoa,Juraldinio/ReactiveCocoa,dachaoisme/ReactiveCocoa,CCOOOOLL/ReactiveCocoa,cstars135/ReactiveCocoa,j364960953/ReactiveCocoa,bscarano/ReactiveCocoa,lixar/ReactiveCocoa,gengjf/ReactiveCocoa,isghe/ReactiveCocoa,jrmiddle/ReactiveCocoa,wangqi211/ReactiveCocoa,tonyarnold/ReactiveCocoa,DreamHill/ReactiveCocoa,stupidfive/ReactiveCocoa,shaohung001/ReactiveCocoa,xulibao/ReactiveCocoa,mattpetters/ReactiveCocoa,vincentiss/ReactiveCocoa,windgo/ReactiveCocoa,Khan/ReactiveCocoa,smilypeda/ReactiveCocoa,OnTheWay1988/ReactiveCocoa,FelixYin66/ReactiveCocoa,liufeigit/ReactiveCocoa,juliangrosshauser/ReactiveCocoa,CQXfly/ReactiveCocoa,dz1111/ReactiveCocoa,BrooksWon/ReactiveCocoa,ericzhou2008/ReactiveCocoa,ioshger0125/ReactiveCocoa,jrmiddle/ReactiveCocoa,DongDongDongDong/ReactiveCocoa,vincentiss/ReactiveCocoa,yangyangluoluo/ReactiveCocoa,ikesyo/ReactiveCocoa,sandyway/ReactiveCocoa,KJin99/ReactiveCocoa,add715/ReactiveCocoa,towik/ReactiveCocoa,rpowelll/ReactiveCocoa,icepy/ReactiveCocoa,sdhzwm/ReactiveCocoa,zzqiltw/ReactiveCocoa,tzongw/ReactiveCocoa,kaylio/ReactiveCocoa,BlessNeo/ReactiveCocoa,calebd/ReactiveCocoa,ioshger0125/ReactiveCocoa,BrooksWon/ReactiveCocoa,shuxiashusheng/ReactiveCocoa,zzqiltw/ReactiveCocoa,tornade0913/ReactiveCocoa,almassapargali/ReactiveCocoa,cstars135/ReactiveCocoa,buildo/ReactiveCocoa,natestedman/ReactiveCocoa,ikesyo/ReactiveCocoa,llb1119/test,jeelun/ReactiveCocoa,hoanganh6491/ReactiveCocoa,on99/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,xumaolin/ReactiveCocoa,FelixYin66/ReactiveCocoa,Ethan89/ReactiveCocoa,walkingsmarts/ReactiveCocoa,xiaobing2007/ReactiveCocoa,jsslai/ReactiveCocoa,valleyman86/ReactiveCocoa,AlanJN/ReactiveCocoa,fanghao085/ReactiveCocoa,yaoxiaoyong/ReactiveCocoa,on99/ReactiveCocoa,zzqiltw/ReactiveCocoa,jam891/ReactiveCocoa,yytong/ReactiveCocoa,DreamHill/ReactiveCocoa,goodheart/ReactiveCocoa,hj3938/ReactiveCocoa,richeterre/ReactiveCocoa,beni55/ReactiveCocoa,AlanJN/ReactiveCocoa,yoichitgy/ReactiveCocoa,cogddo/ReactiveCocoa,shuxiashusheng/ReactiveCocoa,dachaoisme/ReactiveCocoa,chieryw/ReactiveCocoa,zhenlove/ReactiveCocoa,zhiwen1024/ReactiveCocoa,Ricowere/ReactiveCocoa,tzongw/ReactiveCocoa,zzzworm/ReactiveCocoa,msdgwzhy6/ReactiveCocoa,itschaitanya/ReactiveCocoa,clg0118/ReactiveCocoa,itschaitanya/ReactiveCocoa,mxxiv/ReactiveCocoa,jsslai/ReactiveCocoa,jeelun/ReactiveCocoa,leelili/ReactiveCocoa,pzw224/ReactiveCocoa,kiurentu/ReactiveCocoa,wangqi211/ReactiveCocoa,tiger8888/ReactiveCocoa,200895045/ReactiveCocoa,JackLian/ReactiveCocoa,imkerberos/ReactiveCocoa,yizzuide/ReactiveCocoa,mxxiv/ReactiveCocoa,Ethan89/ReactiveCocoa,rpowelll/ReactiveCocoa,taylormoonxu/ReactiveCocoa,OneSmallTree/ReactiveCocoa,loupman/ReactiveCocoa,hbucius/ReactiveCocoa,ohwutup/ReactiveCocoa,zhaoguohui/ReactiveCocoa,icepy/ReactiveCocoa,BlessNeo/ReactiveCocoa,liufeigit/ReactiveCocoa,yoichitgy/ReactiveCocoa,takeshineshiro/ReactiveCocoa,howandhao/ReactiveCocoa,fhchina/ReactiveCocoa,nickcheng/ReactiveCocoa,tiger8888/ReactiveCocoa,beni55/ReactiveCocoa,brasbug/ReactiveCocoa,kevin-zqw/ReactiveCocoa,sugar2010/ReactiveCocoa,luerhouhou/ReactiveCocoa,wpstarnice/ReactiveCocoa,hilllinux/ReactiveCocoa,pzw224/ReactiveCocoa,Ethan89/ReactiveCocoa,yangshengchaoios/ReactiveCocoa,DongDongDongDong/ReactiveCocoa,jrmiddle/ReactiveCocoa,nikita-leonov/ReactiveCocoa,nickcheng/ReactiveCocoa,libiao88/ReactiveCocoa,llb1119/test,clg0118/R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