pgsql: Fix macro placement in pg_config.h.in

Fix macro placement in pg_config.h.in

Commit 274bbced85383e831dde accidentally placed the pg_config.h.in
for SSL_CTX_set_num_tickets on the wrong line wrt where autoheader
places it.  Fix by re-arranging and backpatch to the same level as
the original commit.

Reported-by: Marina Polyakova <m.polyakova@postgrespro.ru>
Discussion: https://postgr.es/m/48cebe8c3eaf308bae253b1dbf4e4a75@postgrespro.ru
Backpatch-through: v12

Branch
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REL_13_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/40e8ea9492df601272519b0e525b9e200001e9cb

Modified Files
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src/include/pg_config.h.in | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)