closes https://github.com/assimp/assimp/issues/1390: aiScene now stores metadata as well.

code/Version.cpp

@@ -118,19 +118,20 @@ ASSIMP_API const char *aiGetBranchName() {
 // ------------------------------------------------------------------------------------------------
 ASSIMP_API aiScene::aiScene()
 : mFlags(0)
-, mRootNode(NULL)
+, mRootNode(nullptr)
 , mNumMeshes(0)
-, mMeshes(NULL)
+, mMeshes(nullptr)
 , mNumMaterials(0)
-, mMaterials(NULL)
+, mMaterials(nullptr)
 , mNumAnimations(0)
-, mAnimations(NULL)
+, mAnimations(nullptr)
 , mNumTextures(0)
-, mTextures(NULL)
+, mTextures(nullptr)
 , mNumLights(0)
-, mLights(NULL)
+, mLights(nullptr)
 , mNumCameras(0)
-, mCameras(NULL)
+, mCameras(nullptr)
+, mMetaData(nullptr)
 , mPrivate(new Assimp::ScenePrivateData()) {
 	// empty
 }
@@ -173,6 +174,9 @@ ASSIMP_API aiScene::~aiScene() {
             delete mCameras[a];
     delete [] mCameras;
 
+    aiMetadata::Dealloc(mMetaData);
+    mMetaData = nullptr;
+
     delete static_cast<Assimp::ScenePrivateData*>( mPrivate );
 }