No op delete for unique_ptr

What would be the most concise way to pass unique_ptr a custom deleter that does nothing? I need for a JNI function I'm writing, where the C++ side expects a unique_ptr, BUT, I don't want the object held by the unique_ptr to be deleted upon exiting the JNI function - I take care of the deletion later. So I'd like to do something like:

std::unique_ptr<MyClass, noop_delete> ptr;

In one line - not with a separate function definition :-)