Deny unused unsafe in vxworks specific stdlib files

Author: B I Mohammed Abbas

library/std/src/os/vxworks/fs.rs

@@ -1,4 +1,5 @@
 #![stable(feature = "metadata_ext", since = "1.1.0")]
+#![deny(unsafe_op_in_unsafe_fn)]
 
 use crate::fs::Metadata;
 use crate::sys_common::AsInner;

library/std/src/os/vxworks/mod.rs

@@ -1,6 +1,7 @@
 //! VxWorks-specific definitions
 
 #![stable(feature = "raw_ext", since = "1.1.0")]
+#![deny(unsafe_op_in_unsafe_fn)]
 
 pub mod fs;
 pub mod raw;

library/std/src/os/vxworks/raw.rs

@@ -1,5 +1,6 @@
 //! VxWorks-specific raw type definitions
 #![stable(feature = "metadata_ext", since = "1.1.0")]
+#![deny(unsafe_op_in_unsafe_fn)]
 
 use crate::os::raw::c_ulong;
 

library/std/src/sys/pal/unix/process/process_vxworks.rs

@@ -1,3 +1,4 @@
+#![deny(unsafe_op_in_unsafe_fn)]
 use libc::{self, c_char, c_int, RTP_ID};
 
 use crate::io::{self, ErrorKind};