Avoiding a zero sized array in cDevice::GetDevice()

CONTRIBUTORS

@@ -2209,6 +2209,7 @@ Marko M
  for avoiding the memcpy() call in cGlyph::cGlyph() if the bitmap is empty
  for avoiding unnecessary processing in cDvbSubtitleConverter::FinishPage() if there
  are no areas
+ for avoiding a zero sized array in cDevice::GetDevice()
 
 Patrick Rother <krd-vdr@gulu.net>
  for reporting a bug in defining timers that only differ in the day of week

HISTORY

@@ -9816,7 +9816,7 @@ Video Disk Recorder Revision History
 - Added missing rounding when dividing frequencies in processing the NIT (thanks to
   Winfried Köhler).
 
-2022-12-06:
+2022-12-07:
 
 - Fixed a compiler warning.
 - Fixed generating the index file in the cutter (reported by Christoph Haubrich).
@@ -9830,3 +9830,4 @@ Video Disk Recorder Revision History
   to Marko Mäkelä).
 - Now avoiding unnecessary processing in cDvbSubtitleConverter::FinishPage() if there
   are no areas (thanks to Marko Mäkelä).
+- Avoiding a zero sized array in cDevice::GetDevice() (thanks to Marko Mäkelä).

device.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: device.c 5.5 2022/01/24 16:53:45 kls Exp $
+ * $Id: device.c 5.6 2022/12/07 09:38:05 kls Exp $
  */
 
 #include "device.h"
@@ -249,7 +249,7 @@ cDevice *cDevice::GetDevice(const cChannel *Channel, int Priority, bool LiveView
 {
   // Collect the current priorities of all CAM slots that can decrypt the channel:
   int NumCamSlots = CamSlots.Count();
-  int SlotPriority[NumCamSlots];
+  int SlotPriority[NumCamSlots + 1]; // +1 to avoid a zero sized array in case there are no CAM slots
   int NumUsableSlots = 0;
   bool InternalCamNeeded = false;
   if (Channel->Ca() >= CA_ENCRYPTED_MIN) {