Proper C preprocessor macro no-op

Question

For debug logging, I have often seen and used something like

#ifdef DEBUG
    #define DLOG(fmt, args...) printf("%s:%d "fmt,__FILE__,__LINE__,args)
#else
    #define DLOG(fmt, args...)
#endif

but in a number of places, I have seen the second #define replaced with

#define DLOG(fmt, args...) do {} while (0)

In particular, there's this answer, and the comment on this other answer to the same question suggests that the problem would be in a situation like

if (condition)
    DLOG("foo");

though my quick test suggests that the resulting semicolon on the line by itself will serve as the no-op statement inside the conditional.

Is one or the other of nothing and do {} while (0) better? If so, why? Is there something else that's even better?