Squashfs: fix filename typo

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
index 3a95ea6..5d45569 100644
--- a/fs/squashfs/squashfs.h
+++ b/fs/squashfs/squashfs.h
@@ -105,5 +105,5 @@
 /* zlib_wrapper.c */
 extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
 
-/* lzo_wrappers.c */
+/* lzo_wrapper.c */
 extern const struct squashfs_decompressor squashfs_lzo_comp_ops;