update test to match new doc(hidden) thread_local api

Author: mtak-

src/test/ui/issues/issue-43733.rs

@@ -13,13 +13,13 @@ static __KEY: std::thread::__FastLocalKeyInner<Foo> =
 static __KEY: std::thread::__OsLocalKeyInner<Foo> =
     std::thread::__OsLocalKeyInner::new();
 
-fn __getit(init: fn() -> Foo) -> std::option::Option<&'static Foo>
+fn __getit() -> std::option::Option<&'static Foo>
 {
-    __KEY.get(init) //~ ERROR call to unsafe function is unsafe
+    __KEY.get(Default::default) //~ ERROR call to unsafe function is unsafe
 }
 
 static FOO: std::thread::LocalKey<Foo> =
-    std::thread::LocalKey::new(__getit, Default::default);
+    std::thread::LocalKey::new(__getit);
 //~^ ERROR call to unsafe function is unsafe
 
 fn main() {

src/test/ui/issues/issue-43733.stderr

@@ -1,16 +1,16 @@
 error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
   --> $DIR/issue-43733.rs:18:5
    |
-LL |     __KEY.get(init)
-   |     ^^^^^^^^^^^^^^^ call to unsafe function
+LL |     __KEY.get(Default::default)
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
    |
    = note: consult the function's documentation for information on how to avoid undefined behavior
 
 error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
   --> $DIR/issue-43733.rs:22:5
    |
-LL |     std::thread::LocalKey::new(__getit, Default::default);
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
+LL |     std::thread::LocalKey::new(__getit);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
    |
    = note: consult the function's documentation for information on how to avoid undefined behavior