Don't decrement the unreleased counter if we failed to release a record

Don't decrement the unreleased counter if we failed to release a record

In a failure situation we may incorrectly decrement the amount of data
released. Only decrement the counter if we successfully released.

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/27091)

(cherry picked from commit 4ad45969b028dbf2521fa42ea463978402b3584b)