Make depth and pc fields integer in standard trace JSON

CHANGELOG.md

@@ -9,7 +9,7 @@
 - Changed: [#5801](https://github.com/ethereum/aleth/pull/5801) `testeth -t BlockchainTests` command now doesn't run the tests for the forks before Istanbul. To run those tests use a separate LegacyTests suite with command `testeth -t LegacyTests/Constantinople/BlockchainTests`.
 - Changed: [#5807](https://github.com/ethereum/aleth/pull/5807) Optimize selfdestruct opcode in LegacyVM by reducing state accesses in certain out-of-gas scenarios.
 - Changed: [#5806](https://github.com/ethereum/aleth/pull/5806) Optimize selfdestruct opcode in aleth-interpreter by reducing state accesses in certain out-of-gas scenarios.
-- Changed: [#5837](https://github.com/ethereum/aleth/pull/5837) Output format of `testeth --jsontrace` command changed to better match output of geth's evm tool and to integrate with evmlab project.
+- Changed: [#5837](https://github.com/ethereum/aleth/pull/5837) [#5839](https://github.com/ethereum/aleth/pull/5839) [#5845](https://github.com/ethereum/aleth/pull/5845) [#5846](https://github.com/ethereum/aleth/pull/5846) Output format of `testeth --jsontrace` command changed to better match output of geth's evm tool and to integrate with evmlab project.
 - Removed: [#5760](https://github.com/ethereum/aleth/pull/5760) Official support for Visual Studio 2015 has been dropped. Compilation with this compiler is expected to stop working after migration to C++14.
 - Fixed: [#5792](https://github.com/ethereum/aleth/pull/5792) Faster and cheaper execution of RPC functions which query blockchain state (e.g. getBalance).
 - Fixed: [#5811](https://github.com/ethereum/aleth/pull/5811) RPC methods querying transactions (`eth_getTransactionByHash`, `eth_getBlockByNumber`) return correct `v` value.

libethereum/StandardTrace.cpp

@@ -96,10 +96,10 @@ void StandardTrace::operator()(uint64_t _steps, uint64_t PC, Instruction inst, b
     r["op"] = static_cast<uint8_t>(inst);
     if (m_showMnemonics)
         r["opName"] = instructionInfo(inst).name;
-    r["pc"] = toString(PC);
+    r["pc"] = PC;
     r["gas"] = toString(gas);
     r["gasCost"] = toString(gasCost);
-    r["depth"] = toString(ext.depth + 1);  // depth in standard trace is 1-based
+    r["depth"] = ext.depth + 1;  // depth in standard trace is 1-based
     if (!!newMemSize)
         r["memexpand"] = toString(newMemSize);