avformat/aviobuf: remove uses of deprecated url_feof()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/aviobuf.c

@@ -555,7 +555,7 @@ int avio_read(AVIOContext *s, unsigned char *buf, int size)
     }
     if (size1 == size) {
         if (s->error)      return s->error;
-        if (url_feof(s))   return AVERROR_EOF;
+        if (avio_feof(s))  return AVERROR_EOF;
     }
     return size1 - size;
 }
@@ -604,7 +604,7 @@ int ffio_read_partial(AVIOContext *s, unsigned char *buf, int size)
     s->buf_ptr += len;
     if (!len) {
         if (s->error)      return s->error;
-        if (url_feof(s))   return AVERROR_EOF;
+        if (avio_feof(s))  return AVERROR_EOF;
     }
     return len;
 }