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e417f939da
In the fail: block of decode_nal_units, a check as to whether fc->ref is nonzero is used. Before this patch, fc->ref was set to NULL in frame_context_setup. The issue is that, by the time frame_context_setup is called, falliable functions (namely slices_realloc and ff_vvc_decode_frame_ps) have already been called. Therefore, there could arise a situation in which the fc->ref test of decode_nal_units' fail: block is performed while fc->ref has an invalid value. This seems to be particularly prevalent in situations where the FrameContexts are being reused. The patch resolves the issue by moving the assignment of fc->ref to NULL to the very top of decode_nal_units, before any falliable functions are called. Signed-off-by: Frank Plowman <post@frankplowman.com>