fix for gcc 4.3

src/gui/ProjectPanel.cpp

@@ -69,7 +69,6 @@
 #include "fwbuilder/Interval.h"
 #include "fwbuilder/FWObject.h"
 #include "fwbuilder/Rule.h"
-#include "fwbuilder/RuleElement.h"
 
 #include <sys/types.h>
 #include <sys/stat.h>

src/gui/ProjectPanel.h

@@ -34,6 +34,7 @@ namespace libfwbuilder {
     class Firewall;
     class PolicyRule;
     class RuleSet;
+    class RuleElement;
     class FWObject;
     class FWReference;
 };