[MPlayer-dev-eng] [PATCH] Correct error handling in bmovl

[Jonas Jensen]

The bmovl video filter sometimes spits out tons of errors because it
thinks select() failed, when actually it just returned 0 to indicate
that nothing has happened.
This patch fixes it by removing the assumption that errno is 0 on
success.

-- 
Jonas Jensen <jbj at knef.dk>
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