Allow missing_safety_doc

We have a whole bunch of unsafe code that calls down to the FFI layer.
It would be nice to have clippy running on CI, these safety docs
warnings are prohibiting that. Until we can add the docs add a compiler
attribute to allow the lint.

secp256k1-sys/src/lib.rs

@@ -19,6 +19,8 @@
 // Coding conventions
 #![deny(non_upper_case_globals, non_camel_case_types, non_snake_case, unused_mut)]
 
+#![allow(clippy::missing_safety_doc)]
+
 #![cfg_attr(all(not(test), not(feature = "std")), no_std)]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 

src/lib.rs

@@ -152,6 +152,8 @@
 #![deny(non_upper_case_globals, non_camel_case_types, non_snake_case)]
 #![warn(missing_docs, missing_copy_implementations, missing_debug_implementations)]
 
+#![allow(clippy::missing_safety_doc)]
+
 #![cfg_attr(all(not(test), not(feature = "std")), no_std)]
 #![cfg_attr(all(test, feature = "unstable"), feature(test))]
 #![cfg_attr(docsrs, feature(doc_cfg))]