Fix another book-sharing message leak...

Sources/Plasma/PubUtilLib/plNetClient/plNetLinkingMgr.cpp

@@ -723,16 +723,15 @@ void plNetLinkingMgr::OfferLinkToPlayer( const plAgeLinkStruct * inInfo, uint32_
 {
 
     plNetClientMgr* mgr = plNetClientMgr::GetInstance();
+    plNetTransport& transport = mgr->TransportMgr();
+    int guestIdx = transport.FindMember(playerID);
+    plNetTransportMember* guestMem = transport.GetMember(guestIdx);         // -1 ?
+
+    if (guestMem) {
         plLinkToAgeMsg* linkM = new plLinkToAgeMsg(inInfo);
         linkM->AddReceiver(mgr->GetKey());
 
         plKey host = mgr->GetLocalPlayerKey();
-
-    plNetTransport &transport = mgr->TransportMgr();
-    int guestIdx = transport.FindMember(playerID);
-    plNetTransportMember *guestMem = transport.GetMember(guestIdx);         // -1 ?
-    if(guestMem)
-    {
         plKey guest = guestMem->GetAvatarKey();
         plAvatarMgr::OfferLinkingBook(host, guest, linkM, host);
     }