Fix problem with parsing output from different versions of dig

src/dig_response.rs

@@ -73,7 +73,11 @@ impl DigResponse {
         );
         if cmd.status.success() {
             Ok(serde_yaml_ng::from_str(
-                String::from_utf8(cmd.stdout.into_iter().skip(2).collect())
+                String::from_utf8(if cmd.stdout.starts_with(b"-\n") {
+                    cmd.stdout.into_iter().skip(2).collect()
+                } else {
+                    cmd.stdout
+                })
                 // we skip two here --------------------------^
                 // because the dig output starts with "-\n" which fails to parse.
                 .map_err(|error| {