Fix magic number check for fingerprint

contractor/processing_chain.cpp

@@ -141,9 +141,9 @@ std::size_t Prepare::WriteContractedGraph(unsigned number_of_edge_based_nodes,
     SimpleLogger().Write() << "Serializing compacted graph of " << contracted_edge_count
                            << " edges";
 
-    FingerPrint fingerprint_orig;
+    const FingerPrint fingerprint = FingerPrint::GetValid();
     boost::filesystem::ofstream hsgr_output_stream(config.graph_output_path, std::ios::binary);
-    hsgr_output_stream.write((char *)&fingerprint_orig, sizeof(FingerPrint));
+    hsgr_output_stream.write((char *)&fingerprint, sizeof(FingerPrint));
     const unsigned max_used_node_id = 1 + [&contracted_edge_list]
     {
         unsigned tmp_max = 0;

contractor/processing_chain.hpp

@@ -33,7 +33,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "../data_structures/query_edge.hpp"
 #include "../data_structures/static_graph.hpp"
 
-class FingerPrint;
 struct EdgeBasedNode;
 struct lua_State;