Fix some compiler warnings.
Fix some compiler warnings.

* test/test_buckets.c
  (deflate_buckets): Initialize local variables.
  (create_gzip_deflate_bucket): Move all declarations to the top.
  (test_deflate_4GBplus_buckets): Use large enough memory for the expected
      size value.

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