Assert sz is nonzero in dav1d_init_get_bits()

dav1d_init_get_bits() initializes c->eof to 0, which implies c->ptr < c->ptr_end, or equivalently sz > 0.

added 3 commits

• c2822aa2...e9df70c4 - 2 commits from branch videolan:master
• 1efea985 - Assert sz is nonzero in dav1d_init_get_bits()

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enabled an automatic merge when the pipeline for 1efea985 succeeds

merged

changed milestone to %0.8.0