Set license file

error_type process_license_info(string_type license_file) {
    BufferHandle* license_buffer = NULL;
    InputStreamHandle* input_stream = NULL;
    boolean_type is_valid = VANILLAPDF_RV_FALSE;
 
    RETURN_ERROR_IF_NOT_SUCCESS(LicenseInfo_IsValid(&is_valid));
    if (is_valid != VANILLAPDF_RV_FALSE) {
        print_text("License is enabled by default\n");
        return VANILLAPDF_TEST_ERROR_FAILURE;
    }
 
    RETURN_ERROR_IF_NOT_SUCCESS(InputStream_CreateFromFile(license_file, &input_stream));
    RETURN_ERROR_IF_NOT_SUCCESS(InputStream_ToBuffer(input_stream, &license_buffer));
    RETURN_ERROR_IF_NOT_SUCCESS(LicenseInfo_SetLicenseBuffer(license_buffer));
    RETURN_ERROR_IF_NOT_SUCCESS(LicenseInfo_IsValid(&is_valid));
 
    if (is_valid != VANILLAPDF_RV_TRUE) {
        print_text("Could not enable license\n");
        return VANILLAPDF_TEST_ERROR_FAILURE;
    }
 
    RETURN_ERROR_IF_NOT_SUCCESS(InputStream_Release(input_stream));
    RETURN_ERROR_IF_NOT_SUCCESS(Buffer_Release(license_buffer));
 
    return VANILLAPDF_TEST_ERROR_SUCCESS;
}