message: document return value for EraseOrphanTx()
diff: @@ -46,6 +46,7 @@ public:
  bool AddOrphanTx(const CTransactionRef &ptx, NodeId peer);
  //! Erase an ophan tx from the orphan pool
  + //! @return true if an orphan matching the hash was found in the orphanpool and successfully erased.
  bool EraseOrphanTx(uint256 hash);
  //! Expire old orphans from the orphan pool
  