message: producer pay: extra check added by Khaled's request
diff: @@ -65,7 +65,7 @@ namespace eosiosystem {
  const asset token_supply = token( N(eosio.token)).get_supply(symbol_type(system_token_symbol).name() );
  const auto usecs_since_last_fill = ct - _gstate.last_pervote_bucket_fill;
  - if( usecs_since_last_fill > 0 ) {
  + if( usecs_since_last_fill > 0 && _gstate.last_pervote_bucket_fill > 0 ) {
  auto new_tokens = static_cast<int64_t>( (continuous_rate * double(token_supply.amount) * double(usecs_since_last_fill)) / double(useconds_per_year) );
  auto to_producers = new_tokens / 5;
  