/// Deletes a top level-future.
Deletes a top level-future.
Deletes a top level - future .
unsafe fn drop_top_level_future(ptr: *mut TopLevelFuture) {
    if !ptr.is_null() {
        let _ = Box::from_raw(ptr);
    }
}
unsafe fn drop_top_level_future ( ptr : * mut TopLevelFuture ) { if ! ptr . is_null ( ) { let _ = Box :: from_raw ( ptr ) ; } }
Deletes a top level-future.
Deletes a top level - future .
ptr
*mut TopLevelFuture