pgsql: Fix incorrect merge in ECPG code with DECLARE

Fix incorrect merge in ECPG code with DECLARE

The same condition was repeated twice when comparing the connection used
by existing declared statement with the one coming from a fresh DECLARE
statement.  This had no consequences, but let's keep the code clean.
Oversight in f576de1.

Author: Shenhao Wang
Discussion: https://postgr.es/m/OSBPR01MB42149653BC0AB0A49D23C1B8F2C69@OSBPR01MB4214.jpnprd01.prod.outlook.com
Backpatch-through: 14

Branch
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REL_14_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/8ab3452df8d5ff26cf52c089b986256b0c02d555

Modified Files
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src/interfaces/ecpg/preproc/ecpg.header | 1 -
1 file changed, 1 deletion(-)