Fixed an important bug with deps

Before 2.2.2 deps files with array on the first level was processing incorrectly, e.g.

([
    {
        tech: 'js',
        shouldDeps: [ { block: "foo", tech: "bemhtml" } ]
    },
    {
        mustDeps: [],
        shouldDeps: [
            { elems: ['foo', 'baz'] }
        ]
    }
]);

Now it fixed.