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avutil/get_pool: remove dead operations whichs result is never used.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -242,7 +242,7 @@ static BufferPoolEntry *get_pool(AVBufferPool *pool)
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BufferPoolEntry *cur = *(void * volatile *)&pool->pool, *last = NULL;
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while (cur != last) {
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FFSWAP(BufferPoolEntry*, cur, last);
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last = cur;
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cur = avpriv_atomic_ptr_cas((void * volatile *)&pool->pool, last, NULL);
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if (!cur)
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return NULL;
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