[vdr] translation context handling in vdr >= 1.5.7

[Christian Wieninger]

Klaus Schmidinger wrote:
> gettext() may or may not return the original string, so if no translation
> is found, the context needs to be stripped.
> 
> Please try this:

sorry for the late response. gmx seemed to be blacklisted again ;)
Works like a charm.

BR,

Christian