check if con != NULL before using it

apps/s_client.c

@@ -1237,8 +1237,12 @@ shut:
 	SHUTDOWN(SSL_get_fd(con));
 	ret=0;
 end:
-	if(prexit) print_stuff(bio_c_out,con,1);
-	if (con != NULL) SSL_free(con);
+	if (con != NULL)
+		{
+		if (prexit != 0)
+			print_stuff(bio_c_out,con,1);
+		SSL_free(con);
+		}
 	if (ctx != NULL) SSL_CTX_free(ctx);
 	if (cert)
 		X509_free(cert);

apps/s_server.c

@@ -1813,13 +1813,16 @@ again:
 			}
 		}
 err:
-	BIO_printf(bio_s_out,"shutting down SSL\n");
+	if (con != NULL)
+		{
+		BIO_printf(bio_s_out,"shutting down SSL\n");
 #if 1
-	SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
+		SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 #else
-	SSL_shutdown(con);
+		SSL_shutdown(con);
 #endif
-	if (con != NULL) SSL_free(con);
+		SSL_free(con);
+		}
 	BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
 	if (buf != NULL)
 		{