k_auto_object: Fix data race
Change the memory order to acqure-release when we decrement the reference count. Prevents a race with line 89 reported by TSan.
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@ -163,7 +163,7 @@ public:
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do {
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ASSERT(cur_ref_count > 0);
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} while (!m_ref_count.compare_exchange_weak(cur_ref_count, cur_ref_count - 1,
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std::memory_order_relaxed));
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std::memory_order_acq_rel));
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// If ref count hits zero, destroy the object.
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if (cur_ref_count - 1 == 0) {
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