Handle overflow write with overflow in disruptor

LibSnugLog/include/disruptor.h

@@ -119,6 +119,12 @@ public:
 		} else if constexpr (OverflowStrategy::on_overflow == overflow_response_t::must_overflow) {
 			if(!fence.compare_exchange_weak(fence_v, new_offset, std::memory_order_release, std::memory_order_relaxed)) {
 				return std::nullopt;
+			} else {
+				offset_t v;
+				do {
+					v = read_lead.load(std::memory_order_acquire);
+					if(v >= new_offset) break;
+				} while(read_lead.compare_exchange_weak(v, new_offset, std::memory_order_release, std::memory_order_relaxed));
 			}
 		} else {
 			static_assert(