Fix compiler warning for getnetworkhashps.
Fix compiler warning for getnetworkhashps.

coinkeeper/2015-06-22_19-13_florincoin,wekuiz/wekoin,ccoin-project/ccoin,privatecoin/privatecoin,richo/dongcoin,cqtenq/Feathercoin,netswift/vertcoin,koharjidan/litecoin,cinnamoncoin/Feathercoin,nanocoins/mycoin,coinkeeper/2015-04-19_21-20_litecoindark,brightcoin/brightcoin,coinkeeper/2015-06-22_18-51_vertcoin,degenorate/Deftcoin,worldcoinproject/worldcoin-v0.8,ohac/sha1coin,coinkeeper/2015-06-22_18-51_vertcoin,marscoin/marscoin,DrCrypto/darkcoin,Anoncoin/anoncoin,privatecoin/privatecoin,richo/dongcoin,united-scrypt-coin-project/unitedscryptcoin,gwangjin2/gwangcoin-core,Dajackal/Ronpaulcoin,netswift/vertcoin,Bluejudy/worldcoin,ghostlander/Feathercoin,plankton12345/litecoin,Cancercoin/Cancercoin,Ziftr/litecoin,tensaix2j/bananacoin,zemrys/vertcoin,privatecoin/privatecoin,netswift/vertcoin,oklink-dev/litecoin_block,Dajackal/Ronpaulcoin,okinc/litecoin,IlfirinCano/shavercoin,bitgoldcoin-project/bitgoldcoin,chrisfranko/aiden,Anoncoin/anoncoin,Checkcoin/checkcoin,coinkeeper/2015-06-22_18-30_anoncoin,Litecoindark/LTCD,coinkeeper/2015-06-22_18-51_vertcoin,ronpaulcoin/ronpaulcoin,cinnamoncoin/Feathercoin,chrisfranko/aiden,kryptokredyt/ProjektZespolowyCoin,ohac/sakuracoin,bootycoin-project/bootycoin,Ziftr/litecoin,Checkcoin/checkcoin,Tetcoin/tetcoin,Anoncoin/anoncoin,koharjidan/litecoin,marscoin/marscoin,cryptcoins/cryptcoin,oklink-dev/litecoin_block,ANCompany/birdcoin-dev,cryptcoins/cryptcoin,earthcoinproject/earthcoin,shapiroisme/datadollar,dakk/soundcoin,zzkt/solarcoin,shadowoneau/ozcoin,enlighter/Feathercoin,Litecoindark/LTCD,jiffe/cosinecoin,shurcoin/shurcoin,mooncoin-project/mooncoin-landann,bitgoldcoin-project/bitgoldcoin,brishtiteveja/sherlockholmescoin,scamcoinz/scamcoin,ccoin-project/ccoin,richo/dongcoin,vertcoin/eyeglass,Tetcoin/tetcoin,richo/dongcoin,brightcoin/brightcoin,nanocoins/mycoin,ccoin-project/ccoin,chrisfranko/aiden,ohac/sha1coin,netswift/vertcoin,KaSt/equikoin,coinkeeper/2015-06-22_18-30_anoncoin,qreatora/worldcoin-v0.8,earthcoinproject/earthcoin,neutrinofoundation/neutrino-digital-currency,bitgoldcoin-project/bitgoldcoin,razor-coin/razor,KaSt/equikoin,ronpaulcoin/ronpaulcoin,worldcoinproject/worldcoin-v0.8,zzkt/solarcoin,Bluejudy/worldcoin,Rav3nPL/doubloons-08,enlighter/Feathercoin,micryon/GPUcoin,Cancercoin/Cancercoin,shadowoneau/ozcoin,Electronic-Gulden-Foundation/egulden,tensaix2j/bananacoin,CrimeaCoin/crimeacoin,enlighter/Feathercoin,coinkeeper/2015-06-22_18-46_razor,neutrinofoundation/neutrino-digital-currency,Electronic-Gulden-Foundation/egulden,zzkt/solarcoin,Electronic-Gulden-Foundation/egulden,earthcoinproject/earthcoin,coinkeeper/2015-06-22_18-46_razor,Rav3nPL/doubloons-08,zemrys/vertcoin,koharjidan/litecoin,stamhe/litecoin,CrimeaCoin/crimeacoin,chrisfranko/aiden,Checkcoin/checkcoin,IlfirinCano/shavercoin,razor-coin/razor,icook/vertcoin,shurcoin/shurcoin,degenorate/Deftcoin,coinkeeper/anoncoin_20150330_fixes,ANCompany/birdcoin-dev,Checkcoin/checkcoin,shurcoin/shurcoin,netswift/vertcoin,zebrains/Blotter,brishtiteveja/sherlockholmescoin,coinkeeper/2015-06-22_19-19_worldcoin,IlfirinIlfirin/shavercoin,coinkeeper/2015-06-22_18-30_anoncoin,zebrains/Blotter,oklink-dev/litecoin_block,Cancercoin/Cancercoin,WorldcoinGlobal/WorldcoinLegacy,KaSt/equikoin,bootycoin-project/bootycoin,ohac/sakuracoin,cinnamoncoin/Feathercoin,enlighter/Feathercoin,Ziftr/litecoin,koharjidan/litecoin,neutrinofoundation/neutrino-digital-currency,shapiroisme/datadollar,jiffe/cosinecoin,brishtiteveja/sherlockholmescoin,koharjidan/litecoin,Checkcoin/checkcoin,coinkeeper/anoncoin_20150330_fixes,shapiroisme/datadollar,icook/vertcoin,Anoncoin/anoncoin,wekuiz/wekoin,DrCrypto/darkcoin,Czarcoin/czarcoin,micryon/GPUcoin,earthcoinproject/earthcoin,tensaix2j/bananacoin,scamcoinz/scamcoin,zebrains/Blotter,razor-coin/razor,coinkeeper/2015-06-22_19-13_florincoin,marscoin/marscoin,stamhe/litecoin,qreatora/worldcoin-v0.8,razor-coin/razor,alexandrcoin/vertcoin,Bluejudy/worldcoin,ghostlander/Feathercoin,Tetcoin/tetcoin,Rav3nPL/doubloons-08,ohac/sakuracoin,wekuiz/wekoin,ghostlander/Feathercoin,earthcoinproject/earthcoin,Tetcoin/tetcoin,IlfirinCano/shavercoin,ANCompany/birdcoin-dev,zebrains/Blotter,mrtexaznl/mediterraneancoin,greencoin-dev/greencoin-dev,richo/dongcoin,vertcoin/eyeglass,mrtexaznl/mediterraneancoin,kryptokredyt/ProjektZespolowyCoin,kryptokredyt/ProjektZespolowyCoin,bootycoin-project/bootycoin,IlfirinIlfirin/shavercoin,marscoin/marscoin,neutrinofoundation/neutrino-digital-currency,brishtiteveja/sherlockholmescoin,jiffe/cosinecoin,degenorate/Deftcoin,coinkeeper/2015-06-22_19-13_florincoin,gwangjin2/gwangcoin-core,Rav3nPL/doubloons-08,IlfirinIlfirin/shavercoin,worldcoinproject/worldcoin-v0.8,alexandrcoin/vertcoin,oklink-dev/litecoin_block,Coinfigli/coinfigli,icook/vertcoin,shurcoin/shurcoin,mooncoin-project/mooncoin-landann,Dajackal/Ronpaulcoin,cqtenq/Feathercoin,brightcoin/brightcoin,tensaix2j/bananacoin,mrtexaznl/mediterraneancoin,kryptokredyt/ProjektZespolowyCoin,Bluejudy/worldcoin,netswift/vertcoin,Dajackal/Ronpaulcoin,cqtenq/Feathercoin,coinkeeper/2015-06-22_18-46_razor,cryptcoins/cryptcoin,stamhe/litecoin,ohac/sakuracoin,zemrys/vertcoin,shapiroisme/datadollar,united-scrypt-coin-project/unitedscryptcoin,zebrains/Blotter,coinkeeper/2015-06-22_18-46_razor,stamhe/litecoin,DrCrypto/darkcoin,Coinfigli/coinfigli,coinkeeper/2015-06-22_18-30_anoncoin,IlfirinCano/shavercoin,cinnamoncoin/Feathercoin,IlfirinCano/shavercoin,WorldcoinGlobal/WorldcoinLegacy,enlighter/Feathercoin,ANCompany/birdcoin-dev,worldcoinproject/worldcoin-v0.8,zemrys/vertcoin,Coinfigli/coinfigli,cinnamoncoin/Feathercoin,ronpaulcoin/ronpaulcoin,novaexchange/EAC,coinkeeper/2015-06-22_19-13_florincoin,cqtenq/Feathercoin,nanocoins/mycoin,saydulk/Feathercoin,WorldcoinGlobal/WorldcoinLegacy,greencoin-dev/greencoin-dev,bootycoin-project/bootycoin,Czarcoin/czarcoin,ronpaulcoin/ronpaulcoin,okinc/litecoin,coinkeeper/2015-06-22_18-51_vertcoin,nanocoins/mycoin,gwangjin2/gwangcoin-core,Litecoindark/LTCD,razor-coin/razor,vertcoin/eyeglass,mooncoin-project/mooncoin-landann,ccoin-project/ccoin,Coinfigli/coinfigli,wekuiz/wekoin,qreatora/worldcoin-v0.8,coinkeeper/2015-06-22_19-19_worldcoin,KaSt/equikoin,shadowoneau/ozcoin,Czarcoin/czarcoin,okinc/litecoin,Cancercoin/Cancercoin,degenorate/Deftcoin,saydulk/Feathercoin,oklink-dev/litecoin_block,coinkeeper/2015-04-19_21-20_litecoindark,novaexchange/EAC,greencoin-dev/greencoin-dev,privatecoin/privatecoin,dakk/soundcoin,Ziftr/litecoin,vertcoin/eyeglass,dakk/soundcoin,dakk/soundcoin,qreatora/worldcoin-v0.8,plankton12345/litecoin,coinkeeper/2015-06-22_19-13_florincoin,Czarcoin/czarcoin,IlfirinIlfirin/shavercoin,coinkeeper/anoncoin_20150330_fixes,shapiroisme/datadollar,Cancercoin/Cancercoin,Czarcoin/czarcoin,micryon/GPUcoin,ANCompany/birdcoin-dev,coinkeeper/2015-06-22_19-19_worldcoin,Electronic-Gulden-Foundation/egulden,icook/vertcoin,alexandrcoin/vertcoin,Bluejudy/worldcoin,okinc/litecoin,alexandrcoin/vertcoin,ohac/sha1coin,degenorate/Deftcoin,coinkeeper/anoncoin_20150330_fixes,shurcoin/shurcoin,zemrys/vertcoin,micryon/GPUcoin,Electronic-Gulden-Foundation/egulden,CrimeaCoin/crimeacoin,scamcoinz/scamcoin,plankton12345/litecoin,united-scrypt-coin-project/unitedscryptcoin,saydulk/Feathercoin,vertcoin/eyeglass,bitgoldcoin-project/bitgoldcoin,mrtexaznl/mediterraneancoin,Litecoindark/LTCD,WorldcoinGlobal/WorldcoinLegacy,nanocoins/mycoin,mooncoin-project/mooncoin-landann,kryptokredyt/ProjektZespolowyCoin,novaexchange/EAC,zzkt/solarcoin,Tetcoin/tetcoin,cryptcoins/cryptcoin,DrCrypto/darkcoin,gwangjin2/gwangcoin-core,KaSt/equikoin,Dajackal/Ronpaulcoin,cqtenq/Feathercoin,bootycoin-project/bootycoin,WorldcoinGlobal/WorldcoinLegacy,saydulk/Feathercoin,coinkeeper/2015-04-19_21-20_litecoindark,cryptcoins/cryptcoin,Electronic-Gulden-Foundation/egulden,Anoncoin/anoncoin,micryon/GPUcoin,coinkeeper/2015-06-22_19-19_worldcoin,chrisfranko/aiden,scamcoinz/scamcoin,IlfirinIlfirin/shavercoin,ohac/sha1coin,shadowoneau/ozcoin,bitgoldcoin-project/bitgoldcoin,ronpaulcoin/ronpaulcoin,saydulk/Feathercoin,Litecoindark/LTCD,CrimeaCoin/crimeacoin,greencoin-dev/greencoin-dev,united-scrypt-coin-project/unitedscryptcoin,shadowoneau/ozcoin,mrtexaznl/mediterraneancoin,coinkeeper/2015-06-22_18-46_razor,ghostlander/Feathercoin,jiffe/cosinecoin,tensaix2j/bananacoin,CrimeaCoin/crimeacoin,brightcoin/brightcoin,plankton12345/litecoin,privatecoin/privatecoin,brightcoin/brightcoin,scamcoinz/scamcoin,ohac/sakuracoin,wekuiz/wekoin,united-scrypt-coin-project/unitedscryptcoin,coinkeeper/2015-06-22_19-19_worldcoin,zemrys/vertcoin,gwangjin2/gwangcoin-core,qreatora/worldcoin-v0.8,coinkeeper/anoncoin_20150330_fixes,icook/vertcoin,ghostlander/Feathercoin,Rav3nPL/doubloons-08,marscoin/marscoin,novaexchange/EAC,coinkeeper/2015-06-22_18-51_vertcoin,coinkeeper/2015-04-19_21-20_litecoindark,coinkeeper/2015-06-22_18-30_anoncoin,dakk/soundcoin,novaexchange/EAC,Ziftr/litecoin,ohac/sha1coin,worldcoinproject/worldcoin-v0.8,okinc/litecoin,plankton12345/litecoin,greencoin-dev/greencoin-dev,mooncoin-project/mooncoin-landann,marscoin/marscoin,brishtiteveja/sherlockholmescoin,Coinfigli/coinfigli,zzkt/solarcoin,koharjidan/litecoin,coinkeeper/2015-04-19_21-20_litecoindark