fix: explicit return statements in `GS1.pm` (#7083)
fix: explicit return statements in `GS1.pm` (#7083)

fix: explicit return statements in GS1.pm
openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server