fuzz: tx_pool: Keep nTime < DEFAULT_SOFTWARE_EXPIRY

Author: luke-jr

src/test/fuzz/tx_pool.cpp

@@ -2,6 +2,7 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include <clientversion.h>
 #include <consensus/validation.h>
 #include <node/context.h>
 #include <node/mempool_args.h>
@@ -115,7 +116,7 @@ void MockTime(FuzzedDataProvider& fuzzed_data_provider, const Chainstate& chains
 {
     const auto time = ConsumeTime(fuzzed_data_provider,
                                   chainstate.m_chain.Tip()->GetMedianTimePast() + 1,
-                                  std::numeric_limits<decltype(chainstate.m_chain.Tip()->nTime)>::max());
+                                  DEFAULT_SOFTWARE_EXPIRY - 1);
     SetMockTime(time);
 }