pdns/dnspacket.cc patch

This patch fixes the compile error reported earlier with GCC 4.7.1. If someone with more insight could review it and provide feedback, it would be much appreciated. In the patch I replaced uint64_t with long because that is labs(3C) calls for in the prototype. However, I am not sure that this is correct. Presumably, with uint64_t the intent was much finer time granularity?

--- pdns/dnspacket.cc.orig      Wed Oct  2 13:57:59 2013
+++ pdns/dnspacket.cc   Wed Oct  2 19:28:46 2013
@@ -572,9 +572,9 @@
   string message;
   
   q->getTSIGDetails(trc, keyname, &message);
-  uint64_t now = time(0);
-  if(abs(trc->d_time - now)> trc->d_fudge) {
-    L<<Logger::Error<<"Packet for '"<<q->qdomain<<"' denied: TSIG (key '"<<*keyname<<"') time delta "<< abs(trc->d_time - now)<<"> 'fudge' "<<trc->d_fudge<
<endl;
+  long now = (long)time(0);
+  if(labs((long)trc->d_time - now)> (long)trc->d_fudge) {
+    L<<Logger::Error<<"Packet for '"<<q->qdomain<<"' denied: TSIG (key '"<<*keyname<<"') time delta "<< (long)labs((long)trc->d_time - now)<<"> 'fudge' "<<
trc->d_fudge<<endl;
     return false;
   }