zlib: prevent uncaught exception in zlibBuffer

If the accumulation of data for the final Buffer is greater than
kMaxLength it will throw an un-catchable RangeError. Instead now pass
the generated error to the callback.

PR-URL: https://github.com/nodejs/io.js/pull/1811


Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>