$this->_postData is not cleared after each request

[walliby]

I am instantiating the Emma class once and then making several API calls. I noticed some errors due to leftover data in $this->_postData after each request. I resolved the issue by adding $this->_postData = array(); before curl_close($ch);

I have also added $this->_params = array(); before curl_close($ch); to be safe.