Not working in IE9 if debug mode = true and debugger turned off #22

Hello!

I just found an interesting bug which occurs in Internet Explorer 9:
If the FileReader´s debug mode is switched on, but the IE F12 developer tools (debugger) are not open, the FileReader does not work.
The reason for this is that the console object does not work if the developer tools are not open and thus console.info(...), console.log(...) etc. throw exceptions.