fix some header typos

include/netinet/in.h

@@ -233,7 +233,7 @@ struct in6_pktinfo
 	unsigned ipi6_ifindex;
 };
 
-struct in6_mutinfo
+struct ip6_mtuinfo
 {
 	struct sockaddr_in6 ip6m_addr;
 	uint32_t ip6m_mtu;

include/sys/timex.h

@@ -7,7 +7,7 @@ extern "C" {
 
 #include <sys/time.h>
 
-struct npttimeval {
+struct ntptimeval {
 	struct timeval time;
 	long maxerror, esterror;
 };