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Fix copy-pasto in freeing memory on error in vacuumlo.

It's harmless to call PQfreemem() with a NULL argument, so the onlyconsequence was that if allocating 'schema' failed, but allocating 'table'or 'field' succeeded, we would leak a bit of memory. That's highlyunlikely to happen, so this is just academical, but let's get it right.Per bug #15838 from Timur Birsh. Backpatch back to 9.5, where thePQfreemem() calls were introduced.Discussion:https://www.postgresql.org/message-id/15838-3221652c72c5e69d@postgresql.org

1 parenta36c84c commit77b68e3Copy full SHA for 77b68e3

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contrib/vacuumlo
- vacuumlo.c

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`‎contrib/vacuumlo/vacuumlo.c‎`

Lines changed: 2 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -243,9 +243,9 @@ vacuumlo(const char database, const struct _param param)`
`243`	`243`	`PQfinish(conn);`
`244`	`244`	`if (schema!=NULL)`
`245`	`245`	`PQfreemem(schema);`
`246`		`-if (schema!=NULL)`
	`246`	`+if (table!=NULL)`
`247`	`247`	`PQfreemem(table);`
`248`		`-if (schema!=NULL)`
	`248`	`+if (field!=NULL)`
`249`	`249`	`PQfreemem(field);`
`250`	`250`	`return-1;`
`251`	`251`	`}`

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Commit77b68e3

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`‎contrib/vacuumlo/vacuumlo.c‎`

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