[Ffmpeg-devel] [PATCH] move utf8 writing to libavutil

[Justin Ruggles]

M?ns Rullg?rd wrote:
> The \ on the last line should go away.  The whole macro should be
> enclosed in do { } while(0).
> 

oops. I'll take that \ out.

Please explain the benefit of the do/while. What does it protect against?

-Justin