Don't accept null in pg_unescape_bytea()

This is an error that slipped in via 8d37c37bcdbf6fa99cd275413342457eeb2c664e.
pg_unescape_bytea() did not accept null in PHP 7.4, and it is not
meaningful for it to accept null now -- it will always fail, and now
with a misleading OOM message.

1 files changed, 1 insertions, 1 deletions

diff --git a/ext/pgsql/pgsql.stub.php b/ext/pgsql/pgsql.stub.php
index 66044b95a5..759313d8ba 100644
--- a/ext/pgsql/pgsql.stub.php
+++ b/ext/pgsql/pgsql.stub.php
@@ -425,7 +425,7 @@ function pg_escape_string($connection, string $string = UNKNOWN): string {}
 /** @param resource|string $connection */
 function pg_escape_bytea($connection, string $string = UNKNOWN): string {}
 
-function pg_unescape_bytea(?string $string = null): string {}
+function pg_unescape_bytea(string $string): string {}
 
 /** @param resource|string $connection */
 function pg_escape_literal($connection, string $string = UNKNOWN): string|false {}