Thread: pgsql: Fix incorrect value for "strategy" with deflateParams() in walme

Fix incorrect value for "strategy" with deflateParams() in walmethods.c

The zlib documentation mentions the values supported for the compression
strategy, but this code has been using a hardcoded value of 0 rather
than Z_DEFAULT_STRATEGY.  This commit adjusts the code to use
Z_DEFAULT_STRATEGY.

Backpatch down to where this code has been added to ease the backport of
any future patch touching this area.

Reported-by: Tom Lane
Discussion: https://postgr.es/m/1400032.1662217889@sss.pgh.pa.us
Backpatch-through: 10

Branch
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REL_13_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/a94576c377b7934860d2fa5453d1cf17d8689810

Modified Files
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src/bin/pg_basebackup/walmethods.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)