Make lines stricter to fix a space leak

[Henning Thielemann]

On Mon, 4 Oct 2010, Daniel Fischer wrote:

> On Monday 04 October 2010 19:32:54, Henning Thielemann wrote:
>
>> Those fixes to memory leaks look very fragile to me.
>
> Yes, they are fragile.

My concern is, whether any fix is really a fix. I have seen several clever 
solutions for my memory leaks, that start to leak again in the greater 
context where I observed the leak the first time.