- red, r_sock = get_linked_node_and_socket(node_tree, node.inputs["R"])
- blue, b_sock = get_linked_node_and_socket(node_tree, node.inputs["B"])
+ red, _ = get_linked_node_and_socket(node_tree, node.inputs["R"])
+ blue, _ = get_linked_node_and_socket(node_tree, node.inputs["B"])