Best practice IMO would be to wrap the closable thing in a wrapper object that handles the case where Close is called multiple times and then defer close that o

Best practice IMO would be to wrap the closable thing in a wrapper object that handles the case where Close is called multiple times and then defer close that one as well as closing at the end of the function. Another idea would be to define a small lambda that either returns the input value or returns error if Close returns an error if you want to use early returns.