fix: golangci-lint

Author: jayantxie

mux/shard_queue_test.go

@@ -57,7 +57,7 @@ func TestShardQueue(t *testing.T) {
 	// test
 	queue := NewShardQueue(4, conn)
 	count, pkgsize := 16, 11
-	for i := 0; i < int(count); i++ {
+	for i := 0; i < count; i++ {
 		var getter WriterGetter = func() (buf netpoll.Writer, isNil bool) {
 			buf = netpoll.NewLinkBuffer(pkgsize)
 			buf.Malloc(pkgsize)

sys_sendmsg_linux.go

@@ -43,7 +43,7 @@ func sendmsg(fd int, bs [][]byte, ivs []syscall.Iovec, zerocopy bool) (n int, er
 	r, _, e := syscall.RawSyscall(syscall.SYS_SENDMSG, uintptr(fd), uintptr(unsafe.Pointer(&msghdr)), 0)
 	resetIovecs(bs, ivs[:iovLen])
 	if e != 0 {
-		return int(r), syscall.Errno(e)
+		return int(r), e
 	}
 	return int(r), nil
 }