caffe2 | Use _aligned_free in WorkerPool destruction (#19751)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/19751
This has probably never been tested on Windows but destruction of WorkersPool crashes because it uses _aligned_malloc to allocate and 'free' to deallocate, which is not symmetric. Fix is to use _aligned_free in deallocation
Reviewed By: hlu1
Differential Revision: D15083472
fbshipit-source-id: 42243fce8f2dfea7554b52e6b289d9fea81d7681
