net processing: clamp -maxorphantx to uint32_t bounds

src/net_processing.h

@@ -17,7 +17,7 @@ class ChainstateManager;
 /** Whether transaction reconciliation protocol should be enabled by default. */
 static constexpr bool DEFAULT_TXRECONCILIATION_ENABLE{false};
 /** Default for -maxorphantx, maximum number of orphan transactions kept in memory */
-static const unsigned int DEFAULT_MAX_ORPHAN_TRANSACTIONS = 100;
+static const uint32_t DEFAULT_MAX_ORPHAN_TRANSACTIONS{100};
 /** Default number of non-mempool transactions to keep around for block reconstruction. Includes
     orphan, replaced, and rejected transactions. */
 static const unsigned int DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN = 100;

src/node/peerman_args.cpp

@@ -3,6 +3,9 @@
 #include <common/args.h>
 #include <net_processing.h>
 
+#include <algorithm>
+#include <limits>
+
 namespace node {
 
 void ApplyArgsManOptions(const ArgsManager& argsman, PeerManager::Options& options)
@@ -10,7 +13,7 @@ void ApplyArgsManOptions(const ArgsManager& argsman, PeerManager::Options& optio
     if (auto value{argsman.GetBoolArg("-txreconciliation")}) options.reconcile_txs = *value;
 
     if (auto value{argsman.GetIntArg("-maxorphantx")}) {
-        options.max_orphan_txs = uint32_t(std::max(int64_t{0}, *value));
+        options.max_orphan_txs = uint32_t((std::clamp<int64_t>(*value, 0, std::numeric_limits<uint32_t>::max())));
     }
 
     if (auto value{argsman.GetIntArg("-blockreconstructionextratxn")}) {