os400qc3: enable passphrase-protected PEM file support using pem.c
@@ -2005,7 +2005,7 @@ try_pem_load(LIBSSH2_SESSION *session, FILE *fp,
fseek(fp, 0L, SEEK_SET);
for (;;) {
ret = _libssh2_pem_parse(session, header, trailer,
- NULL,
+ passphrase,
fp, &data, &datalen);
if (!ret) {
