Fix warning abut inexistent warning (#6153)

These warnings are not existing before Visual Studio 2015

Fixes #6151

Co-authored-by: Xavier Bonaventura <xavier.bonaventura@gmail.com>
Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>

code/AssetLib/Blender/BlenderIntermediate.h

@@ -116,7 +116,7 @@ namespace Blender {
         mywrap arr;
     };
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && _MSC_VER < 1900
 #   pragma warning(disable:4351)
 #endif
 
@@ -171,7 +171,7 @@ namespace Blender {
         // original file data
         const FileDatabase& db;
     };
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && _MSC_VER < 1900
 #   pragma warning(default:4351)
 #endif