DTLS: fix memory leak when allocation fails.

Change-Id: Ib789362bc0a8aa5460cfce61fef141cb22747b33

ssl/d1_lib.c

@@ -126,7 +126,11 @@ int dtls1_new(SSL *s)
 	DTLS1_STATE *d1;
 
 	if (!ssl3_new(s)) return(0);
-	if ((d1=OPENSSL_malloc(sizeof *d1)) == NULL) return (0);
+	if ((d1=OPENSSL_malloc(sizeof *d1)) == NULL)
+		{
+		ssl3_free(s);
+		return (0);
+		}
 	memset(d1,0, sizeof *d1);
 
 	/* d1->handshake_epoch=0; */
@@ -151,6 +155,7 @@ int dtls1_new(SSL *s)
 		if ( d1->sent_messages) pqueue_free(d1->sent_messages);
 		if ( d1->buffered_app_data.q) pqueue_free(d1->buffered_app_data.q);
 		OPENSSL_free(d1);
+		ssl3_free(s);
 		return (0);
 		}