Fix code to pass tests

Author: qwc

backup.go

@@ -52,7 +52,7 @@ func (b *Backup) CanRun() error {
 		return fmt.Errorf("the setting targetPath MUST exist within a backup configuration")
 	}
 	//  script must exist, having only script means this is handled in the script
-	if b.ScriptPath == "" {
+	if b.ScriptPath == nil {
 		return fmt.Errorf("the setting scriptPath must exist within a backup configuration")
 	}
 	if !b.ShouldRun() {

backup_test.go

@@ -68,6 +68,7 @@ func TestCanRun(t *testing.T) {
 	}
 	err = bkpScriptPathMissing.CanRun()
 	if err == nil {
+		t.Logf("ScriptPath is %v", bkpScriptPathMissing.ScriptPath)
 		t.Log("Missing scriptPath has to fail function 'CanRun()'")
 		t.Fail()
 	}