Fixed asserting free disk space in case there is no local timer currently recording

HISTORY

@@ -9348,7 +9348,7 @@ Video Disk Recorder Revision History
   Senzel).
 - Official release.
 
-2019-05-20: Version 2.4.1
+2019-05-23: Version 2.4.1
 
 - Fixed handling the tfRecording flag in the SVDRP commands MODT and UPDT (reported
   by Johann Friedrichs).
@@ -9407,3 +9407,4 @@ Video Disk Recorder Revision History
 - Fixed handling repeat function for keyboards.
 - Added a workaround for broadcasters who set an event to status "not running" where
   this is inappropriate; implicitly setting events to "not running" is now also logged.
+- Fixed asserting free disk space in case there is no local timer currently recording.

timers.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: timers.c 4.18 2018/03/17 10:07:19 kls Exp $
+ * $Id: timers.c 4.19 2019/05/23 09:46:32 kls Exp $
  */
 
 #include "timers.h"
@@ -819,7 +819,7 @@ const cTimer *cTimers::GetMatch(const cEvent *Event, eTimerMatch *Match) const
 
 int cTimers::GetMaxPriority(void) const
 {
-  int n = 0;
+  int n = -1;
   for (const cTimer *ti = First(); ti; ti = Next(ti)) {
       if (!ti->Remote() && ti->Recording())
          n = max(n, ti->Priority());

timers.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: timers.h 4.11 2018/02/27 13:57:26 kls Exp $
+ * $Id: timers.h 4.12 2019/05/23 09:47:19 kls Exp $
  */
 
 #ifndef __TIMERS_H
@@ -178,6 +178,7 @@ public:
   cTimer *GetMatch(const cEvent *Event, eTimerMatch *Match = NULL) { return const_cast<cTimer *>(static_cast<const cTimers *>(this)->GetMatch(Event, Match)); }
   int GetMaxPriority(void) const;
       ///< Returns the maximum priority of all local timers that are currently recording.
+      ///< If there is no local timer currently recording, -1 is returned.
   const cTimer *GetNextActiveTimer(void) const;
   const cTimer *UsesChannel(const cChannel *Channel) const;
   bool SetEvents(const cSchedules *Schedules);

vdr.c

@@ -22,7 +22,7 @@
  *
  * The project's page is at http://www.tvdr.de
  *
- * $Id: vdr.c 4.29 2019/03/18 11:17:07 kls Exp $
+ * $Id: vdr.c 4.30 2019/05/23 09:48:35 kls Exp $
  */
 
 #include <getopt.h>
@@ -1182,7 +1182,9 @@ int main(int argc, char *argv[])
           if (Timers->DeleteExpired())
              TimersModified = true;
           // Make sure there is enough free disk space for ongoing recordings:
-          AssertFreeDiskSpace(Timers->GetMaxPriority());
+          int MaxPriority = Timers->GetMaxPriority();
+          if (MaxPriority >= 0)
+             AssertFreeDiskSpace(MaxPriority);
           TimersStateKey.Remove(TimersModified);
         }
         // Recordings: