Add support for dup()ing fake file descriptors to the simulator.
diff --git a/simulator/wrapsim/Common.h b/simulator/wrapsim/Common.h
index a9c3bb8..463262f 100644
--- a/simulator/wrapsim/Common.h
+++ b/simulator/wrapsim/Common.h
@@ -14,5 +14,6 @@
 #include "Log.h"
 #include "SimMgr.h"
 #include "Globals.h"
+#include "Util.h"
 
 #endif /*_WRAPSIM_COMMON_H*/