Fixed compilation error for key_tests
Fixed compilation error for key_tests

quark-project/quark,coinkeeper/2015-06-22_18-59_quark,MaxGuevara/quark,quark-project/quark,blood2/bloodcoin-0.9,blood2/bloodcoin-0.9,QuarkCoin/BlockChain,coinkeeper/2015-06-22_18-59_quark,MaxGuevara/quark,jcaferjr/C-Note,blood2/bloodcoin-0.9,zurcoin/zurcoin,quark-project/quark,zurcoin/zurcoin,MaxGuevara/quark,jcaferjr/C-Note,coinkeeper/2015-06-22_18-59_quark,zurcoin/zurcoin,quark-project/quark,blood2/bloodcoin-0.9,QuarkCoin/BlockChain,coinkeeper/2015-06-22_18-59_quark,MaxGuevara/quark,jcaferjr/C-Note,QuarkCoin/BlockChain,quark-project/quark,zurcoin/zurcoin,coinkeeper/2015-06-22_18-59_quark,MaxGuevara/quark,zurcoin/zurcoin,blood2/bloodcoin-0.9,jcaferjr/C-Note,jcaferjr/C-Note,zurcoin/zurcoin,quark-project/quark,QuarkCoin/BlockChain,MaxGuevara/quark