key zeroisation for pvkfmt now done on all branch paths
key zeroisation for pvkfmt now done on all branch paths

Reviewed-by: Paul Yang <cad61ddf4788d12607a026a313663800394626e7@baishancloud.com>
Reviewed-by: Paul Dale <bc4a6b4cd7a8395c734c8eb5aef04a9c30188c85@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7107)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl