Fix missing import

Signed-off-by: Joas Schilling <coding@schilljs.com>

app/src/main/java/com/nextcloud/talk/controllers/ConversationsListController.java

@@ -32,6 +32,7 @@ import android.os.Bundle;
 import android.os.Handler;
 import android.text.InputType;
 import android.text.TextUtils;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;