[vdr] maybe two bugs in vdr

[CopyPoint]

> > But found out that not channels don't work but fixed groups (:@2222 Radio)
> > got the following results:
> >
> > :@1111 Group, 111 exists         -> vdr switches correctly
> > :@2222 Group, 222 dosn't exist -> vdr goes to 22
> > 3333 Channel,  333 dosn't exist -> vdr goes 3333
>
>Today I have sorted my channels and came across this behaviour. The attached
>patch should solve this problem.
>
>Greetings,
>Thomas

Works fine with 1.3.32

Thank you very much

         Thorsten