Fix 64-bit VS2010 build

src/compiler/generic-node-inl.h

Index: src/compiler/generic-node-inl.h
diff --git a/src/compiler/generic-node-inl.h b/src/compiler/generic-node-inl.h
index 9dd3dd1e8ea42d946732c17c8a1d0dd57d3d6f85..bcf6ccfbe15cb449bd740996275a71eab9a57977 100644
--- a/src/compiler/generic-node-inl.h
+++ b/src/compiler/generic-node-inl.h
@@ -217,7 +217,7 @@ S* GenericNode<B, S>::New(GenericGraphBase* graph, int input_count,
   size_t node_size = sizeof(GenericNode);
   size_t inputs_size = input_count * sizeof(Input);
   size_t uses_size = input_count * sizeof(Use);
-  size_t size = node_size + inputs_size + uses_size;
+  int size = static_cast<int>(node_size + inputs_size + uses_size);
   Zone* zone = graph->zone();
   void* buffer = zone->New(size);
   S* result = new (buffer) S(graph, input_count);