filter: fix memory leak of property on failure case
filter: fix memory leak of property on failure case

Signed-off-by: takahasi <33bdcc34846fccbaac0eed5c29bacf7e1684967a@gmail.com>

takahasi/fluent-bit,takahasi/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,takahasi/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,takahasi/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,takahasi/fluent-bit,takahasi/fluent-bit,nokute78/fluent-bit,takahasi/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,takahasi/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit