Fix empty system from email in prod

Author: wmnnd

config/config.exs

@@ -108,7 +108,7 @@ config :keila, KeilaWeb.Gettext,
   default_locale: "en",
   locales: ["de", "en"]
 
-config(:keila, Keila.Mailer, from_email: "keila@localhost")
+config(:keila, Keila.Auth.Emails, from_email: "keila@localhost")
 
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.

lib/keila/auth/emails.ex

@@ -109,6 +109,6 @@ defmodule Keila.Auth.Emails do
   end
 
   defp system_from_email() do
-    Application.get_env(:keila, Keila.Mailer) |> Keyword.fetch!(:from_email)
+    Application.get_env(:keila, __MODULE__) |> Keyword.fetch!(:from_email)
   end
 end