unbreak compilation and finish backport r24280 by mstorsjo
Originally committed as revision 25324 to svn://svn.ffmpeg.org/ffmpeg/branches/0.5
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 9650ecf..3143a23 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -160,8 +160,7 @@
s->buf_ptr = s->buffer + offset1;
} else if ((s->is_streamed ||
offset1 <= s->buf_end + SHORT_SEEK_THRESHOLD - s->buffer) &&
- !s->write_flag && offset1 >= 0 &&
- (whence != SEEK_END || force)) {
+ !s->write_flag && offset1 >= 0) {
while(s->pos < offset && !s->eof_reached)
fill_buffer(s);
if (s->eof_reached)