perf: Lazy init reconnect lock when needed #379
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cheenamalhotra
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edwardneal
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In ideal situations the reconnection lock isn't needed most of the time but it currently always allocated unused and then cleaned up by the GC. This PR defers the creation of the lock object used in reconnections until just before it is needed. It uses interlocked to ensure that only one concurrent call can assign to the variable and the semantics of compareexchange mean that all of them will observe the same value once one has assigned it.