Replace local pid module with the one located at github.com/eosswedenorg-go/pid

src/main.go

@@ -6,7 +6,7 @@ import (
 	"os/signal"
 	"syscall"
 	"internal/log"
-	"internal/pid"
+	"github.com/eosswedenorg-go/pid"
 	"github.com/pborman/getopt/v2"
 )
 
@@ -130,7 +130,7 @@ func main() {
 
 	if len(pidFile) > 0 {
 		log.Info("Writing pidfile: %s", pidFile)
-		_, err := pid.Save(pidFile)
+		err := pid.Save(pidFile)
 		if err != nil {
 			log.Error("Failed to write pidfile: %v", err)
 		}

src/pid/go.mod

@@ -1,3 +0,0 @@
-module internal/pid
-
-go 1.14

src/pid/pid.go

@@ -1,28 +0,0 @@
-
-package pid
-
-import (
-	"os"
-	"strconv"
-)
-
-func Get() (int) {
-	return os.Getpid()
-}
-
-func Save(path string) (int, error) {
-
-	pid := Get()
-	fd, err := os.Create(path)
-	if err != nil {
-    	return -1, err
-	}
-
-	_, err = fd.WriteString(strconv.Itoa(pid))
-
-	if err != nil {
-		return -1, err
-	}
-
-	return pid, nil
-}