Thread: pgsql: Turn off deprecated bison warnings under MSVC

Turn off deprecated bison warnings under MSVC

These are disabled by the configure code, so this is just fixing an
inconsistency in the MSVC code.

Backpatch to all live branches.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/71c2fd0c04a5daaaab5331879e23181bb52334e1

Modified Files
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src/tools/msvc/pgbison.pl | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)