Fixing compilation issue on VS2013 in CP solver.

src/constraint_solver/constraint_solver.h

@@ -1465,7 +1465,7 @@ class Solver {
   // Creates a demon from a callback.
   Demon* MakeCallbackDemon(std::function<void(Solver*)> callback);
   // Creates a demon from a closure.
-  Demon* MakeCallbackDemon(std::function<void()> closure);
+  Demon* MakeClosureDemon(std::function<void()> closure);
 
   // (l <= b <= u)
   Constraint* MakeBetweenCt(IntExpr* const v, int64 l, int64 u);

src/constraint_solver/constraints.cc

@@ -436,8 +436,8 @@ Demon* Solver::MakeCallbackDemon(std::function<void(Solver*)> callback) {
   return RevAlloc(new Callback1Demon(callback));
 }
 
-Demon* Solver::MakeCallbackDemon(std::function<void()> callback) {
-  return RevAlloc(new ClosureDemon(callback));
+Demon* Solver::MakeClosureDemon(std::function<void()> closure) {
+  return RevAlloc(new ClosureDemon(closure));
 }
 
 Constraint* Solver::MakeTrueConstraint() {

src/constraint_solver/dependency_graph.cc

@@ -77,7 +77,7 @@ class IntervalVarStartAdapter : public DependencyGraphNode {
       : DependencyGraphNode(graph), interval_var_(var) {
     CHECK(graph != nullptr);
     CHECK(var != nullptr);
-    Demon* const demon = interval_var_->solver()->MakeCallbackDemon(
+    Demon* const demon = interval_var_->solver()->MakeClosureDemon(
         [this]() { WhenIntervalChanged(); });
     interval_var_->WhenAnything(demon);
   }

src/constraint_solver/python/constraint_solver.swig

@@ -1255,6 +1255,7 @@ namespace operations_research {
 // - MakeBoolVarArray()
 //
 // - MakeCallbackDemon()
+// - MakeClosureDemon()
 //
 // - MakeFixedDurationIntervalVarArray()
 // - MakeIntervalVarArray()