net: fix comment

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6546044

src/pkg/net/dial.go

@@ -81,7 +81,7 @@ func resolveNetAddr(op, net, addr string) (afnet string, a Addr, err error) {
 //	Dial("tcp", "google.com:80")
 //	Dial("tcp", "[de:ad:be:ef::ca:fe]:80")
 //
-// For IP networks, addr must be "ip", "ip4" or "ip6" followed
+// For IP networks, net must be "ip", "ip4" or "ip6" followed
 // by a colon and a protocol number or name.
 //
 // Examples:

src/pkg/net/fd_unix.go

@@ -582,7 +582,7 @@ func (fd *netFD) accept(toAddr func(syscall.Sockaddr) Addr) (netfd *netFD, err e
 	}
 	defer fd.decref()
 
-	// See ../syscall/exec.go for description of ForkLock.
+	// See ../syscall/exec_unix.go for description of ForkLock.
 	// It is okay to hold the lock across syscall.Accept
 	// because we have put fd.sysfd into non-blocking mode.
 	var s int

src/pkg/net/fd_windows.go

@@ -524,7 +524,7 @@ func (fd *netFD) accept(toAddr func(syscall.Sockaddr) Addr) (*netFD, error) {
 	defer fd.decref()
 
 	// Get new socket.
-	// See ../syscall/exec.go for description of ForkLock.
+	// See ../syscall/exec_unix.go for description of ForkLock.
 	syscall.ForkLock.RLock()
 	s, err := syscall.Socket(fd.family, fd.sotype, 0)
 	if err != nil {

src/pkg/net/sock_posix.go

@@ -17,7 +17,7 @@ var listenerBacklog = maxListenerBacklog()
 
 // Generic socket creation.
 func socket(net string, f, t, p int, ipv6only bool, ulsa, ursa syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (fd *netFD, err error) {
-	// See ../syscall/exec.go for description of ForkLock.
+	// See ../syscall/exec_unix.go for description of ForkLock.
 	syscall.ForkLock.RLock()
 	s, err := syscall.Socket(f, t, p)
 	if err != nil {