If an audio module has has_mix=false, x->attr_mix defaults to 100 so that the processed signal is passed out, not the unprocessed input signal. This was needed to get rid of has_mix in jmod.crossfade~.
If an audio module has has_mix=false, x->attr_mix defaults to 100 so that the processed signal is passed out, not the unprocessed input signal. This was needed to get rid of has_mix in jmod.crossfade~.

git-svn-id: c70bd4441ad5e0563430019b01ef925cf1c0ee30@3777 464221e2-0a0f-0410-983b-f8d57d210c17

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