adjust for Weak::as_raw -> as_ptr rename

tests/compile-fail/rc_as_ptr.rs

@@ -5,17 +5,17 @@
 use std::rc::{Rc, Weak};
 use std::ptr;
 
-/// Taken from the `Weak::as_raw` doctest.
+/// Taken from the `Weak::as_ptr` doctest.
 fn main() {
     let strong = Rc::new(Box::new(42));
     let weak = Rc::downgrade(&strong);
     // Both point to the same object
-    assert!(ptr::eq(&*strong, Weak::as_raw(&weak)));
+    assert!(ptr::eq(&*strong, Weak::as_ptr(&weak)));
     // The strong here keeps it alive, so we can still access the object.
-    assert_eq!(42, **unsafe { &*Weak::as_raw(&weak) });
+    assert_eq!(42, **unsafe { &*Weak::as_ptr(&weak) });
     
     drop(strong);
     // But not any more. We can do Weak::as_raw(&weak), but accessing the pointer would lead to
     // undefined behaviour.
-    assert_eq!(42, **unsafe { &*Weak::as_raw(&weak) }); //~ ERROR dereferenced after this allocation got freed
+    assert_eq!(42, **unsafe { &*Weak::as_ptr(&weak) }); //~ ERROR dereferenced after this allocation got freed
 }