[Firebird-net-provider] Bug in FbSecurity object

[Todd <pal...@ya...>]

The FbSecurity object (FbSecurity.cs) has a bug in the DisplayUser()
function.

The second last line of the function is:

FbUserData userData = (FbUserData)info[0];

This throws and InvalidCastException because info[0] is an array of
FbUserData objects, not an FbUserData object.

Replacing the last two lines with:

FbUserData[] users = (FbUserData[])info[0];
return users.Length > 0 ? (FbUserData)users[0] : null;

Corrects the problem and also returns null if the user is not valid.


Todd