Use empty string instead of QString("")

Fixes deprecation warnings like

  declarativebarseries.cpp(38): warning C4996: 'QString::QString': Use fromUtf8, QStringLiteral, or QLatin1String

There is an API difference between a QString() and an empty string,
(QString::isNull), but a good API shouldn't rely on this.

Change-Id: I341b066758ce05a7578ebad8bb9c1df3f2ea5370
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/chartsqml2/declarativescatterseries.cpp b/src/chartsqml2/declarativescatterseries.cpp
index 5f8756fd..c8357e2f 100644
--- a/src/chartsqml2/declarativescatterseries.cpp
+++ b/src/chartsqml2/declarativescatterseries.cpp
@@ -115,7 +115,7 @@ void DeclarativeScatterSeries::handleBrushChanged()
     // the brush file name needs to be cleared.
     if (!m_brushFilename.isEmpty() && QScatterSeries::brush().textureImage() != m_brushImage) {
         m_brushFilename.clear();
-        emit brushFilenameChanged(QString(""));
+        emit brushFilenameChanged(QString());
     }
 }