message: Fix stale comment in CTxMemPool::TrimToSize.
  backports bitcoin@58254aa3bc2e92840679183cc884eb76670af525
diff: @@ -909,10 +909,10 @@ void CTxMemPool::TrimToSize(size_t sizelimit)
  while (DynamicMemoryUsage() > sizelimit) {
  indexed_transaction_set::nth_index<1>::type::iterator it = mapTx.get<1>().begin();
  - // We set the new mempool min fee to either the feerate of the removed set,
  - // or the "minimum reasonable fee rate" (ie some value under which we consider
  - // txn to have 0 fee). This way, if the mempool reaches its full size on free
  - // txn, we will simply disable free txn until there is a block, and some time.
  + // We set the new mempool min fee to the feerate of the removed set, plus the
  + // "minimum reasonable fee rate" (ie some value under which we consider txn
  + // to have 0 fee). This way, we don't allow txn to enter mempool with feerate
  + // equal to txn which were removed with no block in between.
  CFeeRate removed(it->GetFeesWithDescendants(), it->GetSizeWithDescendants());
  removed += minReasonableRelayFee;
  trackPackageRemoved(removed);
  