Issue #195 proposed patch review request

Hi everyone,

I've been looking at this issue for a while, and i believe i found a way 
to resolve it. I've posted a patch file in the Issue ticket ( 
https://gitlab.com/inkscape/inkscape/issues/195 ). It's a fairly simple 
fix, but i was wondering if someone could have a look at it, and maybe 
give some feedback in case something is not right.

Thank you

Guiu Rocafort