Remove extra parenthesis from comment.
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@ -2177,7 +2177,7 @@ GetSnapshotDataReuse(Snapshot snapshot)
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* GetSnapshotData() cannot change while ProcArrayLock is held. Snapshot
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* contents only depend on transactions with xids and xactCompletionCount
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* is incremented whenever a transaction with an xid finishes (while
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* holding ProcArrayLock) exclusively). Thus the xactCompletionCount check
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* holding ProcArrayLock exclusively). Thus the xactCompletionCount check
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* ensures we would detect if the snapshot would have changed.
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*
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* As the snapshot contents are the same as it was before, it is safe to
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