Consistently set all fields in pg_stat_replication to null instead of 0
Previously the "sent" field would be set to 0 and all other xlog pointers be set to NULL if there were no valid values (such as when in a backup sending walsender).
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@ -2822,6 +2822,9 @@ pg_stat_get_wal_senders(PG_FUNCTION_ARGS)
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else
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else
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{
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{
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values[1] = CStringGetTextDatum(WalSndGetStateString(state));
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values[1] = CStringGetTextDatum(WalSndGetStateString(state));
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if (XLogRecPtrIsInvalid(sentPtr))
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nulls[2] = true;
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values[2] = LSNGetDatum(sentPtr);
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values[2] = LSNGetDatum(sentPtr);
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if (XLogRecPtrIsInvalid(write))
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if (XLogRecPtrIsInvalid(write))
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