Remove apparently useless next clause in #embedded_params causing method to return nil

[kindrowboat]

This fixes an issue where if a Her model, with a has_many association was built with an empty array for said association, that an error would be raised when #to_params was called on that object.

The root of this problem was a next clause in the middle of an #inject (which causes the memo, formerly a hash, to become nil).

Regardless, it didn't seem to me that the next clause was accomplishing anything. An association skipped here because it was blank would still be included in the #to_params result because it was being merged with the existing params. Removing the offending clause did not break any current specs.

Also a ninja bug fix to use #her_nearby_class to determine the class to call #include_root_in_json.

[dturnerTS]

I actually have this fixed in an outstanding PR #262 sorry you ran into the bug.

[kindrowboat]

Aha, so it does! I also didn't know has_one serialization had been implemented by someone. Good stuff.