Intel C compiler warns on this assignment in this if(), probably
because it's being assigned as a constant. To avoid a spurious warning,
split it into two instructions, which should also make it more logical
once the FIXME is resolved.
patch by Diego 'Flameeyes' Pettenò flameeyes A gmail P com
Originally committed as revision 15525 to svn://svn.ffmpeg.org/ffmpeg/trunk