Add missing sys/select.h #include, fixes compilation on FreeBSD 7.0.

patch by Alexis Ballier, alexis.ballier gmail com


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@15649 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavdevice/audio.c

@@ -34,6 +34,7 @@
 #include <fcntl.h>
 #include <sys/ioctl.h>
 #include <sys/time.h>
+#include <sys/select.h>
 
 #include "libavutil/log.h"
 #include "libavcodec/avcodec.h"