Verbose "row loaded" output printed unnecessarily

```
$ wc -l 201812-citibike-tripdata.csv
   10001 201812-citibike-tripdata.csv
$ csv2db load -f 201812-citibike-tripdata.csv -u data -p secret -d data_science -t trips -v
Finding file(s).
Establishing database connection.

Loading file 201812-citibike-tripdata.csv
10000 rows loaded
0 rows loaded
Done

Closing database connection.
$
```
The line `0 rows loaded` should not be printed.