Fixed locking the Channels list in cDisplayChannel, where the lock was still held when Flush() was called (cont'd)

CONTRIBUTORS

@@ -283,6 +283,8 @@ Uwe Scheffler <linux_dvb@uni.de>
  for reporting a problem in handling the PrimaryLimit when requesting a device for
  live viewing
  for reporting a black screen while a "Recording started" message is displayed
+ for reporting a problem with the lock on the Channels list in cDisplayChannel still
+ being held when Flush() was called
 
 Matjaz Thaler <matjaz.thaler@guest.arnes.si>
  for improving AC3 decoding when replaying DVDs

HISTORY

@@ -9348,7 +9348,7 @@ Video Disk Recorder Revision History
   Senzel).
 - Official release.
 
-2018-05-06: Version 2.4.1
+2018-05-27: Version 2.4.1
 
 - Fixed handling the tfRecording flag in the SVDRP commands MODT and UPDT (reported
   by Johann Friedrichs).
@@ -9360,4 +9360,4 @@ Video Disk Recorder Revision History
   unconditionally in the main loop, and checks whether the current cSkinDisplay object
   (if any) implements SetMessage().
 - Fixed locking the Channels list in cDisplayChannel, where the lock was still held
-  when Flush() was called (reported by Matthias Senzel).
+  when Flush() was called (reported by Matthias Senzel and Uwe Scheffler).

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 4.76 2018/05/06 09:30:11 kls Exp $
+ * $Id: menu.c 4.77 2018/05/27 09:51:56 kls Exp $
  */
 
 #include "menu.h"
@@ -4654,8 +4654,10 @@ cDisplayChannel::cDisplayChannel(eKeys FirstKey)
   displayChannel = Skins.Current()->DisplayChannel(withInfo);
   positioner = NULL;
   channel = NULL;
-  LOCK_CHANNELS_READ;
-  channel = Channels->GetByNumber(cDevice::CurrentChannel());
+  {
+    LOCK_CHANNELS_READ;
+    channel = Channels->GetByNumber(cDevice::CurrentChannel());
+  }
   ProcessKey(FirstKey);
 }