Fixed TS crash when entire neighborhood is on tabu list

Graph.cpp

 
         while(cheeseSupplied == true)
         {
-            std::vector<unsigned> nextRoute;
+            std::vector<unsigned> nextRoute = currentRoute;
+            // ...na wszelki wypadek, gdyby cale sasiedztwo bylo na liscie tabu
+            // (zeby algorytm sie nie wywalil)
             int nextRouteLength = -1;
 
             std::vector<unsigned> nextTabu(3, 0);