Fixed cUnbufferedFile::Seek() in case it is compiled without USE_FADVISE

CONTRIBUTORS

@@ -2672,3 +2672,6 @@ Frank Neumann <frank.neumann@hp.com>
 Gerald Dachs <vdr@dachsweb.de>
  for reporting a problem with checking for minimum line length of 21 characters in
  the LIRC receiver code
+
+Juergen Lock <vdr-l@jelal.kn-bremen.de>
+ for fixing cUnbufferedFile::Seek() in case it is compiled without USE_FADVISE

HISTORY

@@ -6567,3 +6567,5 @@ Video Disk Recorder Revision History
 - Made updating the editing marks during replay react faster in case the marks
   file has just been written.
 - Fixed horizontal scaling of subtitles (reported by Reinhard Nissl).
+- Fixed cUnbufferedFile::Seek() in case it is compiled without USE_FADVISE (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 2.12 2011/02/25 14:58:31 kls Exp $
+ * $Id: tools.c 2.13 2011/03/20 15:20:00 kls Exp $
  */
 
 #include "tools.h"
@@ -1575,9 +1575,9 @@ ssize_t cUnbufferedFile::Read(void *Data, size_t Size)
      cachedstart = min(cachedstart, curpos);
 #endif
      ssize_t bytesRead = safe_read(fd, Data, Size);
-#ifdef USE_FADVISE
      if (bytesRead > 0) {
         curpos += bytesRead;
+#ifdef USE_FADVISE
         cachedend = max(cachedend, curpos);
 
         // Read ahead:
@@ -1597,8 +1597,9 @@ ssize_t cUnbufferedFile::Read(void *Data, size_t Size)
            }
         else
            ahead = curpos; // jumped -> we really don't want any readahead, otherwise e.g. fast-rewind gets in trouble.
+#endif
         }
-
+#ifdef USE_FADVISE
      if (cachedstart < cachedend) {
         if (curpos - cachedstart > READCHUNK * 2) {
            // current position has moved forward enough, shrink tail window.