[RFC] vim-patch: Mark patch 7.4.402 as NA

Mark patch 7.4.402 as NA

Code modified in patch 7.4.402 was introduced with patch 7.4.399,
which is also marked as NA (FEAT_CRYPT was removed).

[vim patch 7.4.402](https://code.google.com/p/vim/source/detail?r=v7-4-402)
[vim patch 7.4.399](https://code.google.com/p/vim/source/detail?r=v7-4-399)