Workshop tab craft buttons - TypeError

[Alyssa]

When clicking a craft button in the workshop tab a (fairly harmless) javascript error is generated;

It is caused by CraftButtonController.buyItem as it tries to call the parameter 'callback', which has not been handed in and so is undefined.

.

I am not sure if that parameter is used elsewhere or if its just a leftover from whatever that function was based off. If its needed still it should be possible to wrap it in a if using typeof.

typeof (callback) === 'function'

[coderpatsy]

Fix #132

→ <<cset 85ea100ca98c>>