fix odbc memory corruption #1874

Job	Run time
test (postgres, postgres, postgres://root:Password123!@127.0.0.1/sqlpage)	3m 21s
compile_and_lint	4m 45s
test (mssql, mssql, mssql://root:Password123!@127.0.0.1/sqlpage)	3m 26s
test (odbc, postgres, Driver=/usr/lib/x86_64-linux-gnu/odbc/psqlodbcw.so;Server=127.0.0.1;Port=54...	5m 21s
docker_build (linux/amd64)	8m 56s
docker_build (linux/arm/v7)	9m 5s
windows_test	9m 59s
test (mysql, mysql, mysql://root:Password123!@127.0.0.1/sqlpage)	3m 15s
docker_build (linux/arm64)	9m 28s
docker_push	23s
	57m 59s

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