slight speedup in checking empty SuffixMatchNodes

diff --git a/pdns/dnsname.hh b/pdns/dnsname.hh
index ec61a04d9f6ec14421d6de86cf52c101058fce5f..b83a183f0eefdf52246cf0d0c3f1bd4bf2abb7ed 100644 (file)
--- a/pdns/dnsname.hh
+++ b/pdns/dnsname.hh
@@ -107,6 +107,8 @@ struct SuffixMatchNode
 
   bool check(const DNSName& name)  const
   {
+    if(children.empty()) // speed up empty set
+      return endNode;
     return check(name.getRawLabels());
   }