[mythtv] 'Never Record' button and Subtitle then Desc method

[Stuart Morgan]

The 'Never Record' button isn't displayed for upcoming recordings which use 
the kDupCheckSubThenDesc method. Now I can easily add the following which I 
reckon would fix the problem, but I must be missing something.

((dupmethod & kDupCheckSubThenDesc) && (subtitle != "" || 
description != "")) ||

With the kDupCheckSubDesc method the button is shown even though it seems it 
should fail all the tests. (The programid is empty and the category_type is 
empty).

-- 
Stuart Morgan