Fix broken error handling in sqlite_make_db_sqlite()

The catch block accessed $err->errorInfo[1] and $err->errorInfo[2],
but WP_SQLite_Driver_Exception (which extends PDOException) never sets
the errorInfo property — it is only populated by PHP's internal PDO C
code, not when constructing PDOException subclasses in userland.

This caused PHP warnings and a blank error message on installation
failures. Use $err->getMessage() instead, which is always available,
and remove the unused $err_code variable.

Made-with: Cursor

Author: ashfame

packages/plugin-sqlite-database-integration/wp-includes/sqlite/install-functions.php

@@ -52,14 +52,12 @@ function sqlite_make_db_sqlite() {
 		}
 		$translator->commit();
 	} catch ( PDOException $err ) {
-		$err_data = $err->errorInfo; // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
-		$err_code = $err_data[1];
 		$translator->rollback();
 		$message  = sprintf(
 			'Error occurred while creating tables or indexes...<br />Query was: %s<br />',
 			var_export( $query, true )
 		);
-		$message .= sprintf( 'Error message is: %s', $err_data[2] );
+		$message .= sprintf( 'Error message is: %s', $err->getMessage() );
 		wp_die( $message, 'Database Error!' );
 	}