Do not treat 0 return value from BIO_get_fd() as error

0 is a valid file descriptor.

RT#4068

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 4428c7dba8f6f407d915c1226f4e0f673e8be241)

diff --git a/apps/ocsp.c b/apps/ocsp.c
index 926083dd1b5cc19909a5ef8a6bc23e216783d9da..6ed255d4b5635ce6f11ac5d40f074025a1b216c9 100644 (file)
--- a/apps/ocsp.c
+++ b/apps/ocsp.c
@@ -1261,8 +1261,8 @@ static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, const char *path,
         return NULL;
     }
 
-    if (BIO_get_fd(cbio, &fd) <= 0) {
-        BIO_puts(err, "Can't get connection fd\n");
+    if (BIO_get_fd(cbio, &fd) < 0) {
+        BIO_puts(bio_err, "Can't get connection fd\n");
         goto err;
     }