Build fix for g++ 4.0.4 ('... may be used uninitialized in this function')

src/devices/mesh/dot11s/peer-management-protocol.cc

@@ -241,7 +241,7 @@ PeerManagementProtocol::ReceivePeerLinkFrame (uint32_t interface, Mac48Address p
   Ptr<PeerLink> peerLink = FindPeerLink (interface, peerAddress);
   if (peerManagementElement.SubtypeIsOpen ())
     {
-      PmpReasonCode reasonCode;
+      PmpReasonCode reasonCode (REASON11S_RESERVED);
       bool reject = !(ShouldAcceptOpen (interface, peerAddress, reasonCode));
       if (peerLink == 0)
         {