Merge pull request #364

533acc3 blockchain_db: store key images for tx without outputs too (moneromooo-monero)

src/blockchain_db/blockchain_db.cpp

@@ -60,8 +60,6 @@ void BlockchainDB::add_transaction(const crypto::hash& blk_hash, const transacti
 
   // iterate tx.vout using indices instead of C++11 foreach syntax because
   // we need the index
-  if (tx.vout.size() != 0)  // it may be technically possible for a tx to have no outputs
-  {
   for (uint64_t i = 0; i < tx.vout.size(); ++i)
   {
     add_output(tx_hash, tx.vout[i], i, tx.unlock_time);
@@ -74,7 +72,6 @@ void BlockchainDB::add_transaction(const crypto::hash& blk_hash, const transacti
       add_spent_key(boost::get<txin_to_key>(tx_input).k_image);
     }
   }
-  }
 }
 
 uint64_t BlockchainDB::add_block( const block& blk