Ignore folder not found for operations

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -1379,6 +1379,7 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                                                                     ServiceSynchronize.this,
                                                                     folder.name + " " + Log.formatThrowable(ex, false));
                                                             db.folder().setFolderError(folder.id, Log.formatThrowable(ex));
+                                                            if (!(ex instanceof FolderNotFoundException))
                                                                 state.error(new OperationCanceledException("Process"));
                                                         } finally {
                                                             if (shouldClose) {