Remember to free the file structure as well

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/filesetup.c b/filesetup.c
index ac2bed7..bae7526 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -549,6 +549,7 @@
 			sfree(f->file_map);
 			f->file_map = NULL;
 		}
+		sfree(f);
 	}
 
 	td->o.filename = NULL;