Resolve a bucket (aka "memory") leak when a request bucket is destroyed before it is morphed into an aggregate bucket.
Resolve a bucket (aka "memory") leak when a request bucket is destroyed
before it is morphed into an aggregate bucket.

* buckets/request_buckets.c
  (serf_request_destroy): New function.
  (serf_bucket_type_request): Use serf_request_destroy.

jandre/serf,jandre/serf,jandre/serf,jandre/serf