unix: fix Listen on solaris

libsocket has __xnet_listen, not __xnet_llisten
which prevents listen from working.

Change-Id: Ia06dc569fcb9950893d91fc1b86257c7742e9e3d
GitHub-Last-Rev: 6f37c4b
GitHub-Pull-Request: #258
Reviewed-on: https://go-review.googlesource.com/c/sys/+/691735
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Jes Cok <xigua67damn@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Author: jwntree

unix/syscall_solaris.go

@@ -629,7 +629,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
 //sys	Kill(pid int, signum syscall.Signal) (err error)
 //sys	Lchown(path string, uid int, gid int) (err error)
 //sys	Link(path string, link string) (err error)
-//sys	Listen(s int, backlog int) (err error) = libsocket.__xnet_llisten
+//sys	Listen(s int, backlog int) (err error) = libsocket.__xnet_listen
 //sys	Lstat(path string, stat *Stat_t) (err error)
 //sys	Madvise(b []byte, advice int) (err error)
 //sys	Mkdir(path string, mode uint32) (err error)