Fixed a crash when trying to delete a channel that is being used by a timer

HISTORY

@@ -8843,3 +8843,4 @@ Video Disk Recorder Revision History
   same thread. This fixes possible crashes when moving or deleting channels in
   the menu or through SVDRP (as well as other operations that try to acquire a
   read lock within a write lock).
+- Fixed a crash when trying to delete a channel that is being used by a timer.

menu.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: menu.c 4.13 2015/09/16 11:02:33 kls Exp $
+ * $Id: menu.c 4.14 2016/12/08 10:39:29 kls Exp $
  */
 
 #include "menu.h"
@@ -498,6 +498,7 @@ eOSState cMenuChannels::Delete(void)
      int DeletedChannel = Channel->Number();
      // Check if there is a timer using this channel:
      if (Timers->UsesChannel(Channel)) {
+        channelsStateKey.Remove(false);
         Skins.Message(mtError, tr("Channel is being used by a timer!"));
         return osContinue;
         }