integration: Fix integration tests with rust 1.33.
integration: Fix integration tests with rust 1.33.

Alignment arrays are not needed anymore, since we have repr(align).

emilio/rust-bindgen,rust-lang/rust-bindgen,emilio/rust-bindgen,rust-lang/rust-bindgen,emilio/rust-bindgen,emilio/rust-bindgen,rust-lang/rust-bindgen,rust-lang/rust-bindgen,emilio/rust-bindgen