QMacStyle code references missing image resource

I get unexpected warnings on the console when running my Qt application on macOS:

QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::translate: Painter not active
QPainter::rotate: Painter not active

The warnings are printed as soon as the application creates a QToolBar with vertical orientation. A minimal test program is attached to demonstrate the issue.

I tracked the problem down to the following line in the implementation of QMacStyle, right here:]

QPixmap pixmap(QLatin1String(":/qt-project.org/styles/macstyle/images/toolbar-ext.png"));

The referenced image file "toolbar-ext.png" cannot be found. Apparently, the image file has been renamed some time ago, but the source code was never updated.

https://github.com/qt/qtbase/commit/01dadd2da89dfa4f0853197ea33581552b2ce500