Fix arguments of error message in QFile::copy()

Amends d34282dba0.

Task-number: QTBUG-100867
Pick-to: 6.3
Change-Id: I075908a51192084055b07ecaa38d9fe32a97a242
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

src/corelib/io/qfile.cpp

@@ -838,7 +838,7 @@ QFile::copy(const QString &newName)
                         if (!out.rename(newName)) {
                             error = true;
                             close();
-                            d->setError(QFile::CopyError, tr("Cannot create %1 for output: %1")
+                            d->setError(QFile::CopyError, tr("Cannot create %1 for output: %2")
                                         .arg(newName, out.errorString()));
                         }
                     }