Address review comments

Author: nathanwhit

std/src/ffi/c_str.rs

@@ -109,7 +109,6 @@ use crate::sys;
 /// documentation of `CString` before use, as improper ownership management
 /// of `CString` instances can lead to invalid memory accesses, memory leaks,
 /// and other memory errors.
-
 #[derive(PartialEq, PartialOrd, Eq, Ord, Hash, Clone)]
 #[cfg_attr(not(test), rustc_diagnostic_item = "cstring_type")]
 #[stable(feature = "rust1", since = "1.0.0")]