Bug 2904

[Krzysztof Foltman]

Juan Lang wrote:

> Whether or not the patch Michael attached is the "real" fix, it should
> solve the immediate problem (the assert failure.)

I think it's an appropriate solution for now. I'll get back to it soon, 
it's quite likely that the assertion itself is wrong (character strings 
which are 0 pixels wide make sense to me, I'm just not sure if the 
wrapping code is able to deal with them).

Krzysztof