settings.setValue("conv_options", (int)(conversion_options_.size()));
int i = 0;
- for (auto kvp : conversion_options_) {
+ for (auto& kvp : conversion_options_) {
settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
i++;