Alignment trap in QFontMetrics::xHeight() on ARM

#include <QApplication>
#include <QFontMetrics>
#include <stdio.h>

int main(int argc, char **argv)
{
	QApplication app(argc, argv);
	QFontMetrics fm(app.font());
	fprintf(stdout, "%d\n", fm.xHeight());
	return app.exec();
}