File spreadcoin-qt.patch of Package spreadcoin

--- src/qt/qcustomplot.h	2015-01-23 23:02:16.000000000 +0100
+++ qcustomplot.h	2021-08-08 12:55:20.842987567 +0200
@@ -30,6 +30,7 @@
 #include <QPointer>
 #include <QWidget>
 #include <QPainter>
+#include <QPainterPath>
 #include <QPaintEvent>
 #include <QMouseEvent>
 #include <QPixmap>