[Block] Correct over minting on phase change (#6)

* [Block] Prevent incorrect block reward

src/main.cpp

@@ -3169,7 +3169,7 @@ bool CheckTransaction(const CTransaction& tx, bool fZerocoinActive, bool fReject
             LogPrint("bench", "      - Connect %u transactions: %.2fms (%.3fms/tx, %.3fms/txin) [%.2fs]\n", (unsigned)block.vtx.size(), 0.001 * (nTime1 - nTimeStart), 0.001 * (nTime1 - nTimeStart) / block.vtx.size(), nInputs <= 1 ? 0 : 0.001 * (nTime1 - nTimeStart) / (nInputs - 1), nTimeConnect * 0.000001);
 
             //PoW phase redistributed fees to miner. PoS stage destroys fees.
-			CAmount nExpectedMint = GetBlockValue(pindex->nHeight);
+            CAmount nExpectedMint = GetBlockValue((pindex->nHeight >= 3800 ? pindex->nHeight : pindex->pprev->nHeight));
             if (block.IsProofOfWork())
                 nExpectedMint += nFees;