types: Minor nits for is_opaque() and can_derive_debug()
types: Minor nits for is_opaque() and can_derive_debug()

jdub/rust-bindgen,rust-lang/rust-bindgen,emilio/rust-bindgen,catdesk/rust-bindgen,catdesk/rust-bindgen,emilio/rust-bindgen,rust-lang/rust-bindgen,rust-lang/rust-bindgen,catdesk/rust-bindgen,emilio/rust-bindgen,rust-lang/rust-bindgen,jdub/rust-bindgen,jdub/rust-bindgen,emilio/rust-bindgen,catdesk/rust-bindgen,emilio/rust-bindgen,jdub/rust-bindgen