always visible next ep button fix

the always visible next ep button cloud be hidden, when playing the last ep of a tv show and changing to a previous ep via the episodes list

app/src/main/java/org/mosad/teapod/MainActivity.kt

@@ -1,7 +1,7 @@
 /**
  * Teapod
  *
- * Copyright 2020  <seil0@mosad.xyz>
+ * Copyright 2020-2021  <seil0@mosad.xyz>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

app/src/main/java/org/mosad/teapod/parser/AoDParser.kt

@@ -1,7 +1,7 @@
 /**
  * Teapod
  *
- * Copyright 2020  <seil0@mosad.xyz>
+ * Copyright 2020-2021  <seil0@mosad.xyz>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

app/src/main/java/org/mosad/teapod/player/PlayerActivity.kt

@@ -260,8 +260,10 @@ class PlayerActivity : AppCompatActivity() {
     private fun onMediaChanged() {
         exo_text_title.text = model.getMediaTitle()
 
-        if (model.nextEpisode == null) {
-            button_next_ep_c.visibility = View.GONE
+        button_next_ep_c.visibility = if (model.nextEpisode == null) {
+            View.GONE
+        } else {
+            View.VISIBLE
         }
     }