pgsql: Avoid potential pfree on NULL on OpenSSL errors

Avoid potential pfree on NULL on OpenSSL errors Guard against the pointer being NULL before pfreeing upon an error returned from OpenSSL. Also handle errors from X509_NAME_print_ex which also can return -1 on memory allocation errors. Backpatch down to v15 where the code was added. Author: Serg

pgsql: Avoid potential pfree on NULL on OpenSSL errors

Avoid potential pfree on NULL on OpenSSL errors Guard against the pointer being NULL before pfreeing upon an error returned from OpenSSL. Also handle errors from X509_NAME_print_ex which also can return -1 on memory allocation errors. Backpatch down to v15 where the code was added. Author: Serg

pgsql: Avoid potential pfree on NULL on OpenSSL errors

Avoid potential pfree on NULL on OpenSSL errors Guard against the pointer being NULL before pfreeing upon an error returned from OpenSSL. Also handle errors from X509_NAME_print_ex which can return -1 on memory allocation errors. Backpatch down to v15 where the code was added. Author: Sergey Sh