path to config file '(null)' instead of an actual path when running svn commandline.

[Bjornar]

The file path to servers or config file should be in this message from the command line, not '(null)'. How can this happen?

ATTENTION!  Your password for authentication realm:

-- (here: the url and a warning message), then: --

You can avoid future appearances of this warning by setting the value

of the 'store-plaintext-passwords' option to either 'yes' or 'no' in

'(null)'.

Store password unencrypted (yes/no)