Include sys/time.h in daemon.c.

Some systems and feature levels want sys/time.h for fd_set
functionality.
Signed-off-by: NJason Riedy <ejr@cs.berkeley.edu>

daemon.c

@@ -3,6 +3,7 @@
 #include <signal.h>
 #include <sys/wait.h>
 #include <sys/socket.h>
+#include <sys/time.h>
 #include <netdb.h>
 #include <netinet/in.h>