wallet: Fix accidental use of the comma operator

src/interfaces/wallet.cpp

@@ -90,7 +90,7 @@ WalletTxStatus MakeWalletTxStatus(const CWalletTx& wtx)
     WalletTxStatus result;
     auto mi = ::mapBlockIndex.find(wtx.hashBlock);
     CBlockIndex* block = mi != ::mapBlockIndex.end() ? mi->second : nullptr;
-    result.block_height = (block ? block->nHeight : std::numeric_limits<int>::max()),
+    result.block_height = (block ? block->nHeight : std::numeric_limits<int>::max());
     result.blocks_to_maturity = wtx.GetBlocksToMaturity();
     result.depth_in_main_chain = wtx.GetDepthInMainChain();
     result.time_received = wtx.nTimeReceived;