compilers doing DCE at -O0 do not necessarily understand "complex" boolean expressions
Build succeeds with this change, this was the only failure
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit fa8fd0808f1086fc85abba5cf123faf41da49305)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>