refactor: Use C++11 range-based for loop
refactor: Use C++11 range-based for loop

pstratem/bitcoin,qtumproject/qtum,EthanHeilman/bitcoin,Sjors/bitcoin,namecoin/namecore,qtumproject/qtum,prusnak/bitcoin,practicalswift/bitcoin,ElementsProject/elements,mm-s/bitcoin,litecoin-project/litecoin,mm-s/bitcoin,bitcoinsSG/bitcoin,AkioNak/bitcoin,instagibbs/bitcoin,domob1812/namecore,jambolo/bitcoin,MarcoFalke/bitcoin,apoelstra/bitcoin,JeremyRubin/bitcoin,alecalve/bitcoin,lateminer/bitcoin,domob1812/bitcoin,Sjors/bitcoin,namecoin/namecoin-core,andreaskern/bitcoin,apoelstra/bitcoin,n1bor/bitcoin,pstratem/bitcoin,MarcoFalke/bitcoin,ajtowns/bitcoin,GroestlCoin/bitcoin,instagibbs/bitcoin,particl/particl-core,AkioNak/bitcoin,namecoin/namecoin-core,Sjors/bitcoin,instagibbs/bitcoin,domob1812/namecore,MarcoFalke/bitcoin,GroestlCoin/GroestlCoin,rnicoll/dogecoin,jlopp/statoshi,anditto/bitcoin,jamesob/bitcoin,bitcoin/bitcoin,andreaskern/bitcoin,kallewoof/bitcoin,MeshCollider/bitcoin,sipsorcery/bitcoin,mm-s/bitcoin,qtumproject/qtum,bitcoin/bitcoin,Xekyo/bitcoin,jnewbery/bitcoin,jambolo/bitcoin,domob1812/bitcoin,rnicoll/dogecoin,rnicoll/dogecoin,jlopp/statoshi,instagibbs/bitcoin,domob1812/bitcoin,yenliangl/bitcoin,lateminer/bitcoin,jlopp/statoshi,EthanHeilman/bitcoin,tecnovert/particl-core,GroestlCoin/bitcoin,GroestlCoin/bitcoin,GroestlCoin/GroestlCoin,cdecker/bitcoin,prusnak/bitcoin,ElementsProject/elements,particl/particl-core,kallewoof/bitcoin,qtumproject/qtum,sstone/bitcoin,Xekyo/bitcoin,namecoin/namecoin-core,tecnovert/particl-core,bitcoinknots/bitcoin,namecoin/namecoin-core,bitcoinsSG/bitcoin,particl/particl-core,domob1812/bitcoin,bitcoinknots/bitcoin,qtumproject/qtum,cdecker/bitcoin,JeremyRubin/bitcoin,jlopp/statoshi,mm-s/bitcoin,rnicoll/dogecoin,namecoin/namecore,mruddy/bitcoin,jlopp/statoshi,pstratem/bitcoin,AkioNak/bitcoin,n1bor/bitcoin,pataquets/namecoin-core,yenliangl/bitcoin,mruddy/bitcoin,jonasschnelli/bitcoin,pstratem/bitcoin,prusnak/bitcoin,domob1812/namecore,Xekyo/bitcoin,ajtowns/bitcoin,kallewoof/bitcoin,sipsorcery/bitcoin,namecoin/namecore,ajtowns/bitcoin,lateminer/bitcoin,prusnak/bitcoin,qtumproject/qtum,mruddy/bitcoin,GroestlCoin/bitcoin,fanquake/bitcoin,bitcoinsSG/bitcoin,MeshCollider/bitcoin,yenliangl/bitcoin,MarcoFalke/bitcoin,namecoin/namecoin-core,kallewoof/bitcoin,anditto/bitcoin,fanquake/bitcoin,prusnak/bitcoin,sipsorcery/bitcoin,jnewbery/bitcoin,n1bor/bitcoin,bitcoinsSG/bitcoin,fanquake/bitcoin,kallewoof/bitcoin,sstone/bitcoin,MeshCollider/bitcoin,anditto/bitcoin,achow101/bitcoin,GroestlCoin/GroestlCoin,Xekyo/bitcoin,ajtowns/bitcoin,n1bor/bitcoin,andreaskern/bitcoin,sipsorcery/bitcoin,n1bor/bitcoin,cdecker/bitcoin,fanquake/bitcoin,sstone/bitcoin,jambolo/bitcoin,MarcoFalke/bitcoin,achow101/bitcoin,litecoin-project/litecoin,bitcoinknots/bitcoin,rnicoll/bitcoin,sstone/bitcoin,anditto/bitcoin,fanquake/bitcoin,jnewbery/bitcoin,jamesob/bitcoin,alecalve/bitcoin,JeremyRubin/bitcoin,dscotese/bitcoin,domob1812/bitcoin,jamesob/bitcoin,fujicoin/fujicoin,jambolo/bitcoin,tecnovert/particl-core,sipsorcery/bitcoin,andreaskern/bitcoin,EthanHeilman/bitcoin,apoelstra/bitcoin,AkioNak/bitcoin,fujicoin/fujicoin,prusnak/bitcoin,GroestlCoin/GroestlCoin,kallewoof/bitcoin,JeremyRubin/bitcoin,Xekyo/bitcoin,dscotese/bitcoin,litecoin-project/litecoin,MeshCollider/bitcoin,apoelstra/bitcoin,bitcoin/bitcoin,practicalswift/bitcoin,cdecker/bitcoin,jnewbery/bitcoin,GroestlCoin/bitcoin,MeshCollider/bitcoin,namecoin/namecore,EthanHeilman/bitcoin,bitcoin/bitcoin,fanquake/bitcoin,andreaskern/bitcoin,mm-s/bitcoin,alecalve/bitcoin,pstratem/bitcoin,andreaskern/bitcoin,MeshCollider/bitcoin,lateminer/bitcoin,litecoin-project/litecoin,namecoin/namecoin-core,jonasschnelli/bitcoin,anditto/bitcoin,jambolo/bitcoin,n1bor/bitcoin,bitcoinknots/bitcoin,Sjors/bitcoin,dscotese/bitcoin,rnicoll/bitcoin,instagibbs/bitcoin,domob1812/bitcoin,namecoin/namecore,bitcoin/bitcoin,practicalswift/bitcoin,fujicoin/fujicoin,fujicoin/fujicoin,dscotese/bitcoin,achow101/bitcoin,achow101/bitcoin,particl/particl-core,pataquets/namecoin-core,pataquets/namecoin-core,EthanHeilman/bitcoin,jamesob/bitcoin,bitcoinknots/bitcoin,pataquets/namecoin-core,jamesob/bitcoin,jnewbery/bitcoin,EthanHeilman/bitcoin,JeremyRubin/bitcoin,lateminer/bitcoin,litecoin-project/litecoin,achow101/bitcoin,yenliangl/bitcoin,domob1812/namecore,cdecker/bitcoin,particl/particl-core,sstone/bitcoin,yenliangl/bitcoin,MarcoFalke/bitcoin,domob1812/namecore,ajtowns/bitcoin,tecnovert/particl-core,ajtowns/bitcoin,jonasschnelli/bitcoin,apoelstra/bitcoin,practicalswift/bitcoin,instagibbs/bitcoin,particl/particl-core,jonasschnelli/bitcoin,apoelstra/bitcoin,fujicoin/fujicoin,tecnovert/particl-core,litecoin-project/litecoin,AkioNak/bitcoin,bitcoinsSG/bitcoin,fujicoin/fujicoin,rnicoll/bitcoin,ElementsProject/elements,domob1812/namecore,bitcoinsSG/bitcoin,rnicoll/bitcoin,mruddy/bitcoin,alecalve/bitcoin,AkioNak/bitcoin,rnicoll/dogecoin,lateminer/bitcoin,pstratem/bitcoin,jonasschnelli/bitcoin,dscotese/bitcoin,rnicoll/bitcoin,mm-s/bitcoin,practicalswift/bitcoin,practicalswift/bitcoin,mruddy/bitcoin,Xekyo/bitcoin,sipsorcery/bitcoin,Sjors/bitcoin,qtumproject/qtum,bitcoin/bitcoin,jambolo/bitcoin,namecoin/namecore,ElementsProject/elements,alecalve/bitcoin,achow101/bitcoin,cdecker/bitcoin,alecalve/bitcoin,ElementsProject/elements,anditto/bitcoin,pataquets/namecoin-core,sstone/bitcoin,JeremyRubin/bitcoin,yenliangl/bitcoin,pataquets/namecoin-core,jlopp/statoshi,ElementsProject/elements,mruddy/bitcoin,jamesob/bitcoin,GroestlCoin/bitcoin,dscotese/bitcoin,GroestlCoin/GroestlCoin,tecnovert/particl-core,GroestlCoin/GroestlCoin,rnicoll/bitcoin