Editors: Fix message box when opening broken code style file

The file name is not supposed to be the button label.

Fixes: QTCREATORBUG-28746
Change-Id: I45ee2a860da8f7ffefc6d72c0d85b7f6a261489c
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/texteditor/codestyleselectorwidget.cpp

@@ -209,8 +209,9 @@ void CodeStyleSelectorWidget::slotImportClicked()
         if (importedStyle)
             m_codeStyle->setCurrentDelegate(importedStyle);
         else
-            QMessageBox::warning(this, tr("Import Code Style"),
-                                 tr("Cannot import code style from %1"), fileName.toUserOutput());
+            QMessageBox::warning(this,
+                                 tr("Import Code Style"),
+                                 tr("Cannot import code style from %1").arg(fileName.toUserOutput()));
     }
 }