sqlite: don't use deprecated QSqlError constructor

so that it can build with configure -no-feature-DEPRECATED

Change-Id: Id2decc05974bad249c79936d99ab63d3cfc375ad
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

src/sql/drivers/sqlite/qsql_sqlite.cpp

@@ -98,7 +98,7 @@ static QSqlError qMakeError(sqlite3 *access, const QString &descr, QSqlError::Er
 {
     return QSqlError(descr,
                      QString(reinterpret_cast<const QChar *>(sqlite3_errmsg16(access))),
-                     type, errorCode);
+                     type, QString::number(errorCode));
 }
 
 class QSQLiteResultPrivate;