BUG/MINOR: ssl: Print correct filename when error occurs reading OCSP

When Multi-Cert bundle are used, error is throwned regarding certificate
filename without including certifcate type extension.
diff --git a/src/ssl_sock.c b/src/ssl_sock.c
index ded1c24..cbc4f39 100644
--- a/src/ssl_sock.c
+++ b/src/ssl_sock.c
@@ -2169,7 +2169,7 @@
 					if (ssl_sock_load_ocsp(cur_ctx, cur_file) < 0) {
 						if (err)
 							memprintf(err, "%s '%s.ocsp' is present and activates OCSP but it is impossible to compute the OCSP certificate ID (maybe the issuer could not be found)'.\n",
-							          *err ? *err : "", path);
+							          *err ? *err : "", cur_file);
 						SSL_CTX_free(cur_ctx);
 						rv = 1;
 						goto end;