Fix "fio: file hash not empty on exit" with blktrace replay

There are two problems:
1. blktrace data hasn't file close action
2. redirect file fileno isn't correct

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/file.h b/file.h
index 1d6624e..51df839 100644
--- a/file.h
+++ b/file.h
@@ -72,6 +72,7 @@
 	 */
 	char *file_name;
 	unsigned int major, minor;
+	int fileno;
 
 	void *mmap_ptr;
 	size_t mmap_sz;