From 3a069193e25364ebdacac86f4b03022c151ea29c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 14 Nov 2016 11:32:17 +0200
Subject: [PATCH] dtlscertificate: Fix error checking in RSA_generate_key_ex()
 usage

Was broken during the port for OpenSSL 1.1.

https://bugzilla.gnome.org/show_bug.cgi?id=774328
---
 ext/dtls/gstdtlscertificate.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/ext/dtls/gstdtlscertificate.c b/ext/dtls/gstdtlscertificate.c
index c1c96020f2..c2d9bb217f 100644
--- a/ext/dtls/gstdtlscertificate.c
+++ b/ext/dtls/gstdtlscertificate.c
@@ -207,12 +207,13 @@ init_generated (GstDtlsCertificate * self)
   rsa = RSA_new ();
   if (rsa != NULL) {
     BIGNUM *e = BN_new ();
-    if (e != NULL && BN_set_word (e, RSA_F4)
-        && RSA_generate_key_ex (rsa, 2048, e, NULL)) {
+    if (e == NULL || !BN_set_word (e, RSA_F4)
+        || !RSA_generate_key_ex (rsa, 2048, e, NULL)) {
       RSA_free (rsa);
       rsa = NULL;
     }
-    BN_free (e);
+    if (e)
+      BN_free (e);
   }
 #endif