Make `drop` method for `PinMut`'s `UnsafeFutureObj` impl empty

diff --git a/src/libcore/mem.rs b/src/libcore/mem.rs
index 5bc55300a97384f313e805399ae9618f7aa66dc5..b83c2e21a1a44d2a5c8274e4f09ee914be635305 100644 (file)
--- a/src/libcore/mem.rs
+++ b/src/libcore/mem.rs
@@ -1240,7 +1240,5 @@ unsafe fn poll(ptr: *mut (), cx: &mut Context) -> Poll<T> {
         PinMut::new_unchecked(&mut *(ptr as *mut F)).poll(cx)
     }
 
-    unsafe fn drop(ptr: *mut ()) {
-        drop(PinMut::new_unchecked(&mut *(ptr as *mut F)));
-    }
+    unsafe fn drop(_ptr: *mut ()) {}
 }