[MPlayer-dev-eng] squelch some warnings (patches incl.)

[Uoti Urpala]

On Mon, 2008-02-25 at 03:20 +0100, Michael Niedermayer wrote:
> Also, if you think if(<this will be 0>) something_nonexistant is ugly
> look at some commits from aurel, like allcodecs.c. And fix this, which
> frankly would be identical to reverting aurels work and iam pretty sure
> he will like this as much as i do like these changes to snow.c.

At least it's compiler-specific and not standard C. It relies on the
compiler to eliminate all references to the symbol or linking will fail,
which the compiler is not required to do.