null derefernce in daemon child process

[barp]

library crashes when it fails to parse json from stdin in the child process in function child in daemon_unix.go

	decoder := json.NewDecoder(os.Stdin)
	if err = decoder.Decode(d); err != nil {
		d.pidFile.Remove()
		return
	}

d.pidFile is not yet initialized at this point

it is initialized at lines below it

	// create PID file after context decoding to know PID file full path.
	if len(d.PidFileName) > 0 {
		d.pidFile = NewLockFile(os.NewFile(4, d.PidFileName))
		if err = d.pidFile.WritePid(); err != nil {
			return
		}
	}

this cause null deference

gopkg.in/sevlyar/go-daemon%2ev0.(*LockFile).Remove(0x0, 0x0, 0x0) /go/pkg/mod/gopkg.in/sevlyar/go-daemon.v0@v0.1.4/lock_file.go:102 +0x2e
gopkg.in/sevlyar/go-daemon%2ev0.(*Context).child(0xc00007c410, 0x491dbd, 0x65ac7b)
/go/pkg/mod/gopkg.in/sevlyar/go-daemon.v0@v0.1.4/daemon_unix.go:238 +0x1e0
gopkg.in/sevlyar/go-daemon%2ev0.(*Context).reborn(0xc00007c410, 0x0, 0x1e, 0x1)
/go/pkg/mod/gopkg.in/sevlyar/go-daemon.v0@v0.1.4/daemon_unix.go:61 +0x36
gopkg.in/sevlyar/go-daemon%2ev0.(*Context).Reborn(0xc00007c410, 0x6, 0xc0000924a0, 0x1e)
/go/pkg/mod/gopkg.in/sevlyar/go-daemon.v0@v0.1.4/daemon.go:31 +0x2b