Fix for anti-captcha class defined even if credentials are empty.

bazarr/init.py

@@ -17,10 +17,10 @@ from utils import get_binary
 os.environ["SZ_USER_AGENT"] = "Bazarr/1"
 
 # set anti-captcha provider and key
-if settings.general.anti_captcha_provider == 'anti-captcha':
+if settings.general.anti_captcha_provider == 'anti-captcha' and settings.anticaptcha.anti_captcha_key != "":
     os.environ["ANTICAPTCHA_CLASS"] = 'AntiCaptchaProxyLess'
     os.environ["ANTICAPTCHA_ACCOUNT_KEY"] = settings.anticaptcha.anti_captcha_key
-elif settings.general.anti_captcha_provider == 'death-by-captcha':
+elif settings.general.anti_captcha_provider == 'death-by-captcha' and settings.deathbycaptcha.username != "" and settings.deathbycaptcha.password != "":
     os.environ["ANTICAPTCHA_CLASS"] = 'DeathByCaptchaProxyLess'
     os.environ["ANTICAPTCHA_ACCOUNT_KEY"] = ':'.join({settings.deathbycaptcha.username, settings.deathbycaptcha.password})
 else: