[RFC][icedtea-web:netx]: handle error code returning functions

[Denis Lila]

Hi.

> I do have a few concerns noted inline below.

The attached patch addresses those (except I use
exists() instead of isDirectory() to check whether
the parent exits, because it's a parent so it must
be a directory).

I also moved the error handling logic in separate
utility functions, so now everything is cleaner.

Regards,
Denis.

----- Original Message -----
> On 03/09/2011 05:35 PM, Denis Lila wrote:
> > Hi.
> >
...
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