Use delete instead of free
Use delete instead of free

Summary: Since a `YGNodeRef` is created with `new`, it needs to be deleted using `delete` instead of `free`.

Reviewed By: richardjrossiii

Differential Revision: D6866064

fbshipit-source-id: a44828cedb5045b6c97179fb30ffd8c8dafcbfbe

facebook/yoga,facebook/yoga,facebook/yoga,facebook/css-layout,facebook/yoga,facebook/css-layout,facebook/css-layout,facebook/css-layout,facebook/css-layout,facebook/yoga,facebook/yoga,facebook/css-layout,facebook/css-layout,facebook/yoga,facebook/yoga,facebook/css-layout,facebook/yoga,facebook/yoga,facebook/css-layout