zlib inflate/deflate/gunzip/gzip crashes when called on non-string input

[nlacasse]

Node v0.6.6 on Linux

Calling any of the zlib "convenience methods" (inflate, deflate, inflateRaw, deflateRaw, gzip, gunzip, gzipRaw, gunzipRaw) with a non-string input results an uncaught error about removeListener.

For example:

zlib.gunzip(1, function (err, result) {
  console.log(err);
});

Expected:
"Invalid argument" error should be logged.

Actual:

Error: removeListener only takes instances of Function
    at Gzip.removeListener (events.js:165:11)
    at Gzip.<anonymous> (zlib.js:126:12)
    at Gzip.emit (events.js:67:17)
    at Gzip.write (zlib.js:291:17)
    at zlibBuffer (zlib.js:158:10)
    at Object.gzip (zlib.js:98:3)

It appears that zlibBuffer is not passing a function argument to removeListener on lines 165 and 166.

[benverhees]

@joyent this issue can be closed, the change has already landed in 40c9348