Ticket #7023: graphml.cpp.patch

graphml.cpp

@@ -21 +21 @@
 
 using namespace boost;
 
+namespace {
+
 class graphml_reader
 {
 public:
@@ -202 +204 @@
     std::vector<any> m_edge;
 };
 
+}
+
 namespace boost
 {
 void BOOST_GRAPH_DECL