[MPlayer-dev-eng] [PATCH] (trivial) fix writing "libavmuxers" to config.h

[Corey Hickey]

Corey Hickey wrote:
> Revision r21607 missed a redirect to /dev/null, so configure prints 
> several lines:
> 
> ./configure: line 7549: ac3_muxer: command not found
> ./configure: line 7549: ac3_muxer: command not found
> (and so on)
> 
> ...and never enables the muxers when writing to config.h.
> 
> This patch is very simple and I could probably commit right right away, 
> but I'll wait a couple hours just to be sure.

Committed.

-Corey