message: walletdb: Remove BerkeleyBatch friend class from BerkeleyDatabase
diff: @@ -97,7 +97,6 @@ class BerkeleyBatch;
  **/
  class BerkeleyDatabase : public WalletDatabase
  {
  - friend class BerkeleyBatch;
  public:
  /** Create dummy DB handle */
  BerkeleyDatabase() : WalletDatabase(), env(nullptr)
  @@ -163,11 +162,12 @@ public:
  /** Database pointer. This is initialized lazily and reset during flushes, so it can be null. */
  std::unique_ptr<Db> m_db;
  + std::string strFile;
  +
  /** Make a BerkeleyBatch connected to this database */
  std::unique_ptr<DatabaseBatch> MakeBatch(const char* mode = "r+", bool flush_on_close = true) override;
  private:
  - std::string strFile;
  /** Return whether this database handle is a dummy for testing.
  * Only to be used at a low level, application should ideally not care
  