net: fix comment in sendFile

Change-Id: Iacee13150b283f9d2867a7ca98f805900f7cbe50
Reviewed-on: https://go-review.googlesource.com/7943Reviewed-by: Minux Ma <minux@golang.org>

src/net/sendfile_dragonfly.go

@@ -91,7 +91,7 @@ func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
 		if err1 != nil {
 			// This includes syscall.ENOSYS (no kernel
 			// support) and syscall.EINVAL (fd types which
-			// don't implement sendfile together)
+			// don't implement sendfile)
 			err = err1
 			break
 		}

src/net/sendfile_freebsd.go

@@ -91,7 +91,7 @@ func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
 		if err1 != nil {
 			// This includes syscall.ENOSYS (no kernel
 			// support) and syscall.EINVAL (fd types which
-			// don't implement sendfile together)
+			// don't implement sendfile)
 			err = err1
 			break
 		}

src/net/sendfile_linux.go

@@ -64,7 +64,7 @@ func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
 		if err1 != nil {
 			// This includes syscall.ENOSYS (no kernel
 			// support) and syscall.EINVAL (fd types which
-			// don't implement sendfile together)
+			// don't implement sendfile)
 			err = err1
 			break
 		}

src/net/sendfile_solaris.go

@@ -95,7 +95,7 @@ func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
 		if err1 != nil {
 			// This includes syscall.ENOSYS (no kernel
 			// support) and syscall.EINVAL (fd types which
-			// don't implement sendfile together)
+			// don't implement sendfile)
 			err = err1
 			break
 		}