Pruning file storage events when pausing the app.

app/src/main/java/com/vitorpamplona/amethyst/ServiceManager.kt

@@ -72,6 +72,7 @@ object ServiceManager {
             LocalCache.pruneOldAndHiddenMessages(it)
             LocalCache.pruneHiddenMessages(it)
             LocalCache.pruneContactLists(it)
+            LocalCache.pruneFileStorageEvents(it)
             // LocalCache.pruneNonFollows(it)
         }
     }

app/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt

@@ -750,7 +750,11 @@ object LocalCache {
     }
 
     fun pruneFileStorageEvents(account: Account) {
-        notes.filter { it.value.event is FileStorageEvent }
+        val toBeRemoved = notes.filter { it.value.event is FileStorageEvent }
+
+        toBeRemoved.forEach {
+            notes.remove(it.key)
+        }
     }
 
     fun pruneOldAndHiddenMessages(account: Account) {