fixed cberl:decode_query_resp/1 for reduced views

Hi,

This fixes an issue with `cberl:decode_query_resp/1` when calling `cberl:view/4` on a reduced couchbase view.

Couchbase queries do not include a key `total_rows` in the JSON response when a reduce function is applied to the targeted view, which makes `cberl:view/4` return an error due to the failed pattern matching, even though everything went as expected.

Thanks

(also, my editor probably stripped the file of its extra spaces :) )