Introduce nla_strdup() to help parse strings attributes
diff --git a/lib/attr.c b/lib/attr.c
index 3ba7aac..298fbb1 100644
--- a/lib/attr.c
+++ b/lib/attr.c
@@ -1023,6 +1023,11 @@
 	return (char *) nla_data(nla);
 }
 
+char *nla_strdup(struct nlattr *nla)
+{
+	return strdup(nla_get_string(nla));
+}
+
 /** @} */
 
 /**