else/if rather than if/if

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/java/com/nextcloud/talk/adapters/messages/TalkMessagesListAdapter.java

@@ -51,11 +51,8 @@ public class TalkMessagesListAdapter<M extends IMessage> extends MessagesListAda
 
         if (holder instanceof IncomingVoiceMessageViewHolder) {
             ((IncomingVoiceMessageViewHolder) holder).assignAdapter(chatController);
-        }
-
-        if (holder instanceof OutcomingVoiceMessageViewHolder) {
+        } else if (holder instanceof OutcomingVoiceMessageViewHolder) {
             ((OutcomingVoiceMessageViewHolder) holder).assignAdapter(chatController);
         }
-
     }
 }