sapdec: Include sys/time.h for struct timeval

This hopefully fixes compile errors on OS/2

Originally committed as revision 25466 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/sapdec.c

@@ -28,6 +28,7 @@
 #if HAVE_SYS_SELECT_H
 #include <sys/select.h>
 #endif
+#include <sys/time.h>
 
 struct SAPState {
     URLContext *ann_fd;