Fix compilation warnings and errors on some compilers

src/graph/centrality/graph_closeness.hh

@@ -55,7 +55,6 @@ struct get_closeness
         const
     {
         using namespace boost;
-        typedef typename graph_traits<Graph>::vertex_descriptor vertex_t;
 
         // select get_vertex_dists based on the existence of weights
         typedef typename mpl::if_<std::is_same<WeightMap, no_weightS>,

src/graph/inference/bundled_vacate_loop.hh

@@ -42,8 +42,6 @@ auto bundled_vacate_sweep(MergeState& state, RNG& rng)
             std::tuple<size_t, double> best_move(state._null_move,
                                                  numeric_limits<double>::max());
 
-            auto r = state.bundle_state(bundle);
-
             auto find_candidates = [&](bool random)
             {
                 for (size_t iter = 0; iter < state._niter; ++iter)

src/graph/inference/gibbs_loop.hh

@@ -112,7 +112,7 @@ auto gibbs_sweep(GibbsState state, RNG& rng_)
                 idx[j] = j;
             }
 
-            if (!isinf(beta))
+            if (!std::isinf(beta))
             {
                 for (size_t j = 0; j < moves.size(); ++j)
                 {

src/graph/inference/multicanonical_loop.hh

@@ -62,7 +62,6 @@ auto multicanonical_sweep(MulticanonicalState& state, RNG& rng)
     {
         auto v = vertex(uniform_sample(vlist, rng), g);
 
-        auto r = state.node_state(v);
         auto s = state.move_proposal(v, rng);
 
         std::pair<double, double> dS = state.virtual_move_dS(v, s);