const map<string, shared_ptr<InputFormat> > formats =
context->input_formats();
- for (const pair<string, shared_ptr<InputFormat> > &f : formats) {
+ for (const pair<const string, shared_ptr<InputFormat> > &f : formats) {
assert(f.second);
QAction *const action = addAction(tr("Import %1...")
.arg(QString::fromStdString(f.second->description())));