Masternode Sync should be finished before mining processing (dashpay#1240)

* Reject getblocktemplate request until masternode sync is finished

* Pending internal miner until masternode sync is finished

Author: thelazier

src/miner.cpp

@@ -25,6 +25,7 @@
 #include "util.h"
 #include "utilmoneystr.h"
 #include "masternode-payments.h"
+#include "masternode-sync.h"
 #include "validationinterface.h"
 
 #include <boost/thread.hpp>
@@ -422,7 +423,7 @@ void static BitcoinMiner(const CChainParams& chainparams)
                         LOCK(cs_vNodes);
                         fvNodesEmpty = vNodes.empty();
                     }
-                    if (!fvNodesEmpty && !IsInitialBlockDownload())
+                    if (!fvNodesEmpty && !IsInitialBlockDownload() && masternodeSync.IsSynced())
                         break;
                     MilliSleep(1000);
                 } while (true);

src/rpcmining.cpp

@@ -463,6 +463,9 @@ UniValue getblocktemplate(const UniValue& params, bool fHelp)
     if (IsInitialBlockDownload())
         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "Dash Core is downloading blocks...");
 
+    if (!masternodeSync.IsSynced())
+        throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "Dash Core is syncing with network...");
+
     static unsigned int nTransactionsUpdatedLast;
 
     if (!lpval.isNull())