Be sure to have an array in Genres before commit

src/internal/movies/movies.go

@@ -64,6 +64,10 @@ type MovieDB struct {
 // NewMovieDB returns a Movie ready to be put in DB from a
 // Movie
 func NewMovieDB(m *Movie) MovieDB {
+	genres := []string{}
+	if m.Genres != nil {
+		genres = m.Genres
+	}
 	return MovieDB{
 		ID:            m.ID,
 		ImdbID:        m.ImdbID,
@@ -77,7 +81,7 @@ func NewMovieDB(m *Movie) MovieDB {
 		Runtime:       m.Runtime,
 		SortTitle:     m.SortTitle,
 		Tagline:       m.Tagline,
-		Genres:        m.Genres,
+		Genres:        genres,
 		Created:       m.Created,
 		Updated:       m.Updated,
 	}