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Remove redundant null pointer checks before PQclear and PQconninfoFree

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These functions already had the free()-like behavior of handling null
pointers as a no-op.  But it wasn't documented, so add it explicitly
to the documentation, too.

Discussion: https://www.postgresql.org/message-id/flat/dac5d2d0-98f5-94d9-8e69-46da2413593d%40enterprisedb.com
This commit is contained in:
Peter Eisentraut
2022-07-03 20:11:05 +02:00
parent 02c408e21a
commit 5faef9d582
13 changed files with 29 additions and 48 deletions
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5
doc/src/sgml/libpq.sgml
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@ -3628,6 +3628,9 @@ char *PQresultErrorField(const PGresult *res, int fieldcode);
<synopsis>
void PQclear(PGresult *res);
</synopsis>
If the argument is a <symbol>NULL</symbol> pointer, no operation is
performed.
</para>
<para>
@ -6670,6 +6673,8 @@ void PQfreemem(void *ptr);
<synopsis>
void PQconninfoFree(PQconninfoOption *connOptions);
</synopsis>
If the argument is a <symbol>NULL</symbol> pointer, no operation is
performed.
</para>
<para>