Fixed an issue where RadiosFragment would wake up on track change even when the app is killed, causing a crash.

app/src/main/java/com/github/apognu/otter/fragments/RadiosFragment.kt

@@ -37,7 +37,8 @@ class RadiosFragment : FunkwhaleFragment<Radio, RadiosAdapter>() {
       GlobalScope.launch(Main) {
         EventBus.get().collect { message ->
           when (message) {
-            is Event.RadioStarted -> recycler.forEach {
+            is Event.RadioStarted ->
+              if (radios != null) { recycler.forEach {
                 it.isEnabled = true
                 it.isClickable = true
               }
@@ -47,3 +48,4 @@ class RadiosFragment : FunkwhaleFragment<Radio, RadiosAdapter>() {
       }
     }
   }
+}