File hdjmod_fix_buffer_overrun_in_device_name_handling.patch of Package hdjmod

From: Matthias Bach <marix@marix.org>
Date: 20117-07-01 20:40:00 +0200
Subject: Fix a buffer overrun
Upstream: to be done

The code messed up handling of the offset when calculating the
maximum number of bytes it can copy into a buffer at a certain
offset.
diff -Naru hdjmod-1.28o/device.c hdjmod-1.28/device.c
--- hdjmod-1.28o/device.c	2009-01-27 15:25:50.000000000 +0100
+++ hdjmod-1.28/device.c	2017-07-01 20:39:07.129497940 +0200
@@ -1769,7 +1769,7 @@
 		memset(shortname,0,sizeof(shortname));
 		snprintf(shortname,sizeof(shortname)-1,"Hercules ");
 		strncpy(shortname+strlen(shortname),
-				card->shortname,sizeof(shortname)+strlen(shortname)-1);
+				card->shortname,sizeof(shortname)-strlen(shortname)-1);
 		memset(card->shortname,0,sizeof(card->shortname));
 		strncpy(card->shortname,shortname,sizeof(card->shortname)-1);
 	}