check for and handle errors

background_check.go

@@ -3,11 +3,16 @@
 package main
 
 import (
+	"fmt"
+
 	"github.com/shirou/gopsutil/process"
 )
 
 func checkProcess(currentPID int) (bool, error) {
-	myProc, _ := process.NewProcess(int32(currentPID))
+	myProc, err := process.NewProcess(int32(currentPID))
+	if err != nil {
+		return false, fmt.Errorf("Error figuring out Packer process info")
+	}
 	bg, _ := myProc.Background()
 
 	return bg, nil