[fyi][icedyea-web] allow null in SecurityValueValidator

[Jiri Vanek]

I have overlooked that validate() is called also on fully constructed map, not only during its loading from file.
In fully constructed map the null is of course possible. If detected, then default is returned by getter.

J.
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: possibleNull
Url: http://mail.openjdk.java.net/pipermail/distro-pkg-dev/attachments/20130228/f8afc5e9/possibleNull.ksh