Fixed calling iconv_close() only with a valid iconv_t value

CONTRIBUTORS

@@ -2835,6 +2835,7 @@ Juergen Lock <vdr-l@jelal.kn-bremen.de>
  for fixing cUnbufferedFile::Seek() in case it is compiled without USE_FADVISE
  for reporting a problem with EPG scan on systems with only a single DVB device that
  use software output
+ for fixing calling iconv_close() only with a valid iconv_t value
 
 Sergiu Dotenco <sergiu.dotenco@googlemail.com>
  for reporting a missing initialization in sDvbSpuRect

HISTORY

@@ -7339,7 +7339,7 @@ Video Disk Recorder Revision History
 - Modified editing marks are now written to disk whenever the replay progress display
   gets hidden (thanks to Christoph Haubrich).
 
-2012-12-02: Version 1.7.33
+2012-12-03: Version 1.7.33
 
 - In order to be able to play TS recordings from other sources, in which there is
   more than one PMT PID in the PAT, 'int cPatPmtParser::PatPmt(void)' has been changed
@@ -7358,3 +7358,4 @@ Video Disk Recorder Revision History
 - Fixed a typo in skins.h (thanks to Lars Hanisch).
 - Simplified calculating the PTS offset in cPtsFixer::Fix() and fixed the overflow
   handling of PCR values (thanks to Sören Moch).
+- Fixed calling iconv_close() only with a valid iconv_t value (thanks to Juergen Lock).

tools.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: tools.c 2.26 2012/09/30 13:04:14 kls Exp $
+ * $Id: tools.c 2.27 2012/12/03 09:31:32 kls Exp $
  */
 
 #include "tools.h"
@@ -842,7 +842,8 @@ cCharSetConv::cCharSetConv(const char *FromCode, const char *ToCode)
 cCharSetConv::~cCharSetConv()
 {
   free(result);
-  iconv_close(cd);
+  if (cd != (iconv_t)-1)
+     iconv_close(cd);
 }
 
 void cCharSetConv::SetSystemCharacterTable(const char *CharacterTable)