Fix hang when PRINTIPI_TEST_INPUT doesn't exist
Fix hang when PRINTIPI_TEST_INPUT doesn't exist

Wallacoloo/printipi,Igor-Rast/printipi,Wallacoloo/printipi,Wallacoloo/printipi,Igor-Rast/printipi,harry159821/printipi,Wallacoloo/printipi,harry159821/printipi,harry159821/printipi,Igor-Rast/printipi,harry159821/printipi,Igor-Rast/printipi