📝 fix clippy warnings

src/stack/unix.rs

@@ -93,13 +93,9 @@ pub fn max_stack_size() -> usize {
     let mut ret = PAGE_SIZE.load(Ordering::Relaxed);
 
     if ret == 0 {
-        let mut limit;
-        let limitret;
-
-        unsafe {
-            limit = mem::MaybeUninit::uninit().assume_init();
-            limitret = libc::getrlimit(libc::RLIMIT_STACK, &mut limit);
-        }
+        let limit = mem::MaybeUninit::uninit();
+        let mut limit = unsafe { limit.assume_init() };
+        let limitret = unsafe { libc::getrlimit(libc::RLIMIT_STACK, &mut limit) };
 
         if limitret == 0 {
             ret = if limit.rlim_max == libc::RLIM_INFINITY

src/yield_.rs

@@ -26,7 +26,10 @@ pub fn done<T>() -> T {
     assert!(is_generator(), "done is only possible in a generator");
     // set the done bit for this special return
     ContextStack::current().top()._ref = 0xf;
-    unsafe { std::mem::MaybeUninit::uninit().assume_init() }
+    // this return value would not be dropped when _ref is 0xf
+    // so it's safe here to reutrn a dummy T
+    let ret = std::mem::MaybeUninit::uninit();
+    unsafe { ret.assume_init() }
 }
 
 /// switch back to parent context