Function munlock 

pub unsafe fn munlock(addr: *const c_void, len: size_t) -> Result<(), Errno>

Unlock memory.

Examples

let mut passwd_buf = vec![0; 64];
let addr = passwd_buf.as_ptr() as *const _;
let ret = unsafe { nc::mlock2(addr, passwd_buf.len(), nc::MCL_CURRENT) };
for i in 0..passwd_buf.len() {
  passwd_buf[i] = i as u8;
}
assert!(ret.is_ok());
let ret = unsafe { nc::munlock(addr, passwd_buf.len()) };
assert!(ret.is_ok());