mempool: Pass in -mempoolexpiry instead of referencing gArgs

- Store the mempool expiry (-mempoolexpiry) in CTxMemPool as a
  std::chrono::seconds member.

- Remove the requirement to explicitly specify a mempool expiry for
  LimitMempoolSize(...), just use the newly-introduced member.

- Remove all now-unnecessary instances of:
    std::chrono::hours{gArgs.GetIntArg("-mempoolexpiry", DEFAULT_MEMPOOL_EXPIRY)}

1 files changed, 1 insertions, 0 deletions

diff --git a/src/txmempool.h b/src/txmempool.h
index 95fd56879f..0a91cf31c7 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -567,6 +567,7 @@ public:
     using Options = kernel::MemPoolOptions;
 
     const int64_t m_max_size_bytes;
+    const std::chrono::seconds m_expiry;
 
     /** Create a new CTxMemPool.
      * Sanity checks will be off by default for performance, because otherwise