LogFS: Fix typo in b6349ac8

Signed-off-by: Joern Engel <joern@logfs.org>
diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c
index 3159db6..8c663a5 100644
--- a/fs/logfs/readwrite.c
+++ b/fs/logfs/readwrite.c
@@ -1861,7 +1861,7 @@
 			size = target;
 
 		logfs_get_wblocks(sb, NULL, 1);
-		err = __logfs_truncate(inode, target);
+		err = __logfs_truncate(inode, size);
 		if (!err)
 			err = __logfs_write_inode(inode, 0);
 		logfs_put_wblocks(sb, NULL, 1);