Fixed unjustified log entries about changed channel pids

CONTRIBUTORS

@@ -2543,6 +2543,7 @@ Derek Kelly (user.vdr@gmail.com)
  for updating sources.conf
  for reporting a problem where the frame rate was not detected correctly
  for testing the implementation of FE_CAN_TURBO_FEC
+ for reporting unjustified log entries about changed channel pids
 
 Marcel Unbehaun <frostworks@gmx.de>
  for adding cRecordingInfo::GetEvent()

HISTORY

@@ -6481,7 +6481,7 @@ Video Disk Recorder Revision History
   from Osama Alrawab). See INSTALL for information on how to turn this on.
 - Added Arabian language texts (thanks to Osama Alrawab).
 
-2010-11-01: Version 1.7.17
+2010-11-07: Version 1.7.17
 
 - Updated the Estonian OSD texts (thanks to Arthur Konovalov).
 - Fixed following symbolic links in RemoveFileOrDir() (cont'd) (thanks to
@@ -6502,3 +6502,4 @@ Video Disk Recorder Revision History
   You should also change the line "F 25" to "F 50" in the 'info' file of that recording.
 - Added support for "registration descriptor" to 'libsi' and using it in pat.c (thanks
   to Rolf Ahrenberg).
+- Fixed unjustified log entries about changed channel pids (reported by Derek Kelly).

channels.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: channels.c 2.16 2010/06/05 13:33:57 kls Exp $
+ * $Id: channels.c 2.17 2010/11/07 12:24:59 kls Exp $
  */
 
 #include "channels.h"
@@ -262,12 +262,14 @@ static int IntArraysDiffer(const int *a, const int *b, const char na[][MAXLANGCO
 {
   int result = 0;
   for (int i = 0; a[i] || b[i]; i++) {
-      if (a[i] && na && nb && strcmp(na[i], nb[i]) != 0)
+      if (!a[i] || !b[i]) {
+         result |= VALDIFF;
+         break;
+         }
+      if (na && nb && strcmp(na[i], nb[i]) != 0)
          result |= STRDIFF;
       if (a[i] != b[i])
          result |= VALDIFF;
-      if (!a[i] || !b[i])
-         break;
       }
   return result;
 }