message: Add one other const
diff: @@ -292,7 +292,7 @@ public:
  class CompareTxMemPoolEntryByAncestorFeeOrGasPrice
  {
  public:
  - bool operator()(const CTxMemPoolEntry& a, const CTxMemPoolEntry& b)
  + bool operator()(const CTxMemPoolEntry& a, const CTxMemPoolEntry& b) const
  {
  bool fAHasCreateOrCall = a.GetTx().HasCreateOrCall();
  bool fBHasCreateOrCall = b.GetTx().HasCreateOrCall();
  