test: simple/test-http-client-timeout-with-data fails in debug mode

[bnoordhuis]

$ python tools/test.py --mode=release,debug simple/test-http-client-timeout-with-data
=== debug test-http-client-timeout-with-data ===                      
Path: simple/test-http-client-timeout-with-data
assert.js:102
  throw new assert.AssertionError({
        ^
AssertionError: 0 == 1
    at process.options.method (/home/bnoordhuis/src/nodejs/master/test/simple/test-http-client-timeout-with-data.js:30:10)
    at process.EventEmitter.emit (events.js:124:20)
Command: out/Debug/node /home/bnoordhuis/src/nodejs/master/test/simple/test-http-client-timeout-with-data.js
[00:01|% 100|+   1|-   1]: Done                                    

Probably a timing issue. I guess I'll fix it, seeing that I'm the one who wrote it.