dservice.get - incorrect filtering by dcheckids

When performing dservice.get and filtering services by dcheckids, this API will return all services, that were discovered by drules that have selected dchecks.

Steps to reproduce:

1. Create Discovery rule with two Checks.
2. Discover a host with two services (both services are based on different checks)
3. Now perform an API request like this:

   {
      "jsonrpc": "2.0",
       "method": "dservice.get",
       "params": {
   		"dcheckids": [1234]
       },
       "auth": "{{auth}}",
       "id": 1
   }

Result: It will return both services, including the one, that was discovered based on other discovery check.
Expected: Only service, based on requested dcheck should be returned.