eZDFS: don't throw exception with empty string as path

[joaoinacio]

JIRA: https://jira.ez.no/browse/EZP-23409

If a path does not exist in in eZDFSFileHandlerDFSBackend, do not pass an empty string (realpath) to thrown exception.

[bdunogier]

Please pay attention to commit messages. The part that appears in logs isn't significant enough.

+1 apart from that.

[joaoinacio]

commit message updated

[joaoinacio]

Squashed, rebased, added JIRA issue. gentle ping @andrerom

[andrerom]

+1

[bdunogier]

Do we want to merge this ? Given that master will never be released officially...

[brookinsconsulting]

Please don't give up on the legacy users who might need improvements now and in the future. It is painful to hear comments like, "Do we want to merge this ? Given that master will never be released officially...".

[bdunogier]

Well, we know that we (eZ) will not release another major version of ezpublish legacy. It doesn't affect maintenance ones, of course.

[andrerom]

@bdunogier my +1 still stands, do you have any concerns for regressions given you know these parts the best?

[bdunogier]

Hmmm... I guess not. I'm not -1 :-)

[andrerom]

@bdunogier lets maybe turn the question around, is this something we should backport? hence which should defiantly go into master first :)

[bdunogier]

I don't think it adds any risk, and it could improve experience. I'm not against a backport.

If we don't backport it, there is no point in merging it, is there ? :-)

[andrerom]

well, it could still be part of a 2015.01.0x or potential future tag of course.