Fixed comment typo.

--HG--
extra : rebase_source : 9f8c814df15ce9f944f34dc6646dc6ab1141cf6c
Turning --no-undefined back on, to see what platforms are still broken.

--HG--
extra : rebase_source : 4bc9c06b0fc9b97adf3d97517addb9d7a27501b3