[lazarus] listbox patch

[Vincent Snijders]

> -----Oorspronkelijk bericht-----
> Van: Micha Nelissen [mailto:micha at neli.hopto.org] 
> > 
> > Well, I have to look into this again, because the patch is not good 
> > enough. Lazarus still leaks a bit of memory when the 
> debugger options 
> > dialog is used. (Tested both windows 98 and windows 2000). Further
> 
> I'd be surprised if this was the only place which is leaking 
> memory ;-).
I am not using every part of the IDE, but I always compile lazarus with
heaptrc enabled.

All the reproducable memory leaks, I encounter, I try to fix and send
patches.
In a regular run no memory leaks occur.

Sometimes I have memleaks, which I can't reproduce. 
I remember two cases right now. I only have an indication from the
backtrace where the leak occurs.
- In the designer during a drag and drop.
- In the codetools, when a declaration can't be found.

As I said, I can't reproduce them, so I can't locate and fix them. The
debug options dialog memory leak is reproducable and will be fixed.

Vincent.