Fix T48671: Cycles crash with OSL nodes and bump after recent refactoring.

intern/cycles/render/nodes.cpp

@@ -4991,6 +4991,13 @@ OSLNode::~OSLNode()
 	delete type;
 }
 
+ShaderNode *OSLNode::clone() const
+{
+	OSLNode *node = new OSLNode(*this);
+	node->type = new NodeType(*type);
+	return node;
+}
+
 OSLNode* OSLNode::create(size_t num_inputs)
 {
 	/* allocate space for the node itself and parameters, aligned to 16 bytes

intern/cycles/render/nodes.h

@@ -912,11 +912,13 @@ public:
 	static OSLNode *create(size_t num_inputs);
 	~OSLNode();
 
+	ShaderNode *clone() const;
+
 	char* input_default_value();
 	void add_input(ustring name, SocketType::Type type);
 	void add_output(ustring name, SocketType::Type type);
 
-	SHADER_NODE_BASE_CLASS(OSLNode)
+	SHADER_NODE_NO_CLONE_CLASS(OSLNode)
 
 	/* ideally we could beter detect this, but we can't query this now */
 	bool has_spatial_varying() { return true; }
@@ -924,9 +926,6 @@ public:
 
 	string filepath;
 	string bytecode_hash;
-
-private:
-	OSLNode();
 };
 
 class NormalMapNode : public ShaderNode {