Fix for Alioth#314271 (musl libc)

* libmisc/utmp.c: Add include files needed for getaddrinfo().
	See Alioth#314271

libmisc/utmp.c

@@ -42,6 +42,8 @@
 #endif
 
 #include <assert.h>
+#include <sys/types.h>
+#include <sys/socket.h>
 #include <netdb.h>
 #include <stdio.h>