String problem?

I've just installed your library and was trying to configure it when I noticed odd behavior with the dictionary returned by `.fix.getdefaults`:

```
q)x:first key .fix.getdefaults[]
q)x
`BEGINSTRING
q)x~`BEGINSTRING
0b
q)x
`BEGINSTRING
q)x~`BEGINSTRING
0b
q)x
`BEGINSTR0
```

I'm not a C programmer, but it looks like some kind of memory pointer issue.  Any idea what's going on?
