Output Equihash solution in RPC results as a hex string

src/rpcblockchain.cpp

@@ -85,11 +85,7 @@ Object blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool txDe
     result.push_back(Pair("tx", txs));
     result.push_back(Pair("time", block.GetBlockTime()));
     result.push_back(Pair("nonce", block.nNonce.GetHex()));
-    Array equihash_solution;
-    BOOST_FOREACH(uint32_t solution_index, block.nSolution) {
-        equihash_solution.push_back((size_t)(solution_index));
-    }
-    result.push_back(Pair("solution", equihash_solution));
+    result.push_back(Pair("solution", HexStr(block.nSolution)));
     result.push_back(Pair("bits", strprintf("%08x", block.nBits)));
     result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
     result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));