Fixed calculating the disk use percentage if there's more than 20TB of recordings

CONTRIBUTORS

@@ -3703,3 +3703,7 @@ Bernd Kuhls <bernd.kuhls@t-online.de>
 
 Ulf Grüne <ulf.gruene@t-online.de>
  for reporting the need for more than 15 modulation systems in cDevice::GetDevice()
+
+Timo Weingärtner <timo@tiwe.de>
+ for reporting an integer overflow in calculating the disk use percentage if there's
+ more than 20TB of recordings

HISTORY

@@ -9747,6 +9747,8 @@ Video Disk Recorder Revision History
   Haubrich).
 - Fixed a memory leak in handling the NIT (thanks to Helmut Binder).
 
-2021-12-20:
+2021-12-24:
 
 - Fixed a possible memory leak in creating fonts (reported by Helmut Binder).
+- Fixed calculating the disk use percentage if there's more than 20TB of recordings
+  (reported by Timo Weingärtner).

videodir.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: videodir.c 5.1 2021/01/19 20:38:28 kls Exp $
+ * $Id: videodir.c 5.2 2021/12/24 10:56:47 kls Exp $
  */
 
 #include "videodir.h"
@@ -163,7 +163,7 @@ int cVideoDirectory::VideoDiskSpace(int *FreeMB, int *UsedMB)
      *FreeMB = free;
   if (UsedMB)
      *UsedMB = used;
-  return (free + used) ? used * 100 / (free + used) : 0;
+  return (free + used) ? round(double(used) * 100 / (free + used)) : 0;
 }
 
 cString cVideoDirectory::PrefixVideoFileName(const char *FileName, char Prefix)