Change wallet to not try to extract tx public key when tx has no outputs (fixes 202612 tx format messages and is otherwise correct)

src/wallet/wallet2.cpp

@@ -109,6 +109,9 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
     LOG_PRINT_L0("Transaction extra has unsupported format: " << get_transaction_hash(tx));
   }
 
+  // Don't try to extract tx public key if tx has no ouputs
+  if (!tx.vout.empty()) 
+  {
     tx_extra_pub_key pub_key_field;
     if(!find_tx_extra_field_by_type(tx_extra_fields, pub_key_field))
     {
@@ -160,6 +163,7 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
 	  m_callback->on_money_received(height, td.m_tx, td.m_internal_output_index);
       }
     }
+  }
 
   uint64_t tx_money_spent_in_ins = 0;
   // check all outputs for spending (compare key images)