Fix http header only page crashes #2338

Job	Run time
docker_build (linux/arm64, duckdb)	6m 42s
docker_build (linux/amd64, duckdb)	5m 48s
windows_test	3m 23s
test (oracle, oracle, Driver=Oracle 21 ODBC driver;Dbq=//127.0.0.1:1521/FREEPDB1;Uid=root;Pwd=Pas...	3m 41s
compile_and_lint	1m 52s
test (postgres, postgres, postgres://root:Password123!@127.0.0.1/sqlpage)	1m 59s
docker_build (linux/amd64, minimal)	5m 36s
docker_build (linux/arm/v7, minimal)	5m 43s
docker_build (linux/arm64, minimal)	6m 41s
test (mssql, mssql, mssql://root:Password123!@127.0.0.1/sqlpage)	2m 0s
test (mysql, mysql, mysql://root:Password123!@127.0.0.1/sqlpage)	2m 6s
test (odbc, postgres, Driver=PostgreSQL Unicode;Server=127.0.0.1;Port=5432;Database=sqlpage;UID=r...	1m 59s
docker_push	0s
	47m 30s

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