Filip Roséen authored Jun 04, 2016 and Thomas Guillem committed Jun 05, 2016

AStreamReadBlock would potentially return 0 because the current data block
(denoted by "p_sys->p_current") was exhausted, even though there might be more
data in the next data block ("p_sys->p_current->p_next").

At the place where this patch apply, `p_sys->p_current` has been set to
`p_sys->p_current->p_next`, so the pointer denotes the next block to
process (even though the name is rather misleading at that point).

Signed-off-by: Thomas Guillem <thomas@gllm.fr>