Blame SOURCES/gnome-disk-utility-m_pi.patch

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--- gnome-disk-utility-3.28.2/src/disks/gdubenchmarkdialog.c.m_pi	2018-05-08 08:43:30.000000000 +0200
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+++ gnome-disk-utility-3.28.2/src/disks/gdubenchmarkdialog.c	2018-05-24 00:49:32.870767764 +0200
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@@ -18,6 +18,10 @@
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 #include <sys/ioctl.h>
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 #include <linux/fs.h>
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+#ifndef __USE_XOPEN
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+#define __USE_XOPEN
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+#endif
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+
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 #include <math.h>
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 #include "gduapplication.h"