fix: Format IP as string again in error log.

In case DEBUG logging is disabled, the formatting done in the
`LOGGER_DEBUG` statement above will not occur, leaving uninitialised
memory here.

Author: iphydf

other/bootstrap_daemon/docker/tox-bootstrapd.sha256

@@ -1 +1 @@
-37e68ca853cd8b01b26c8d8c61d1db6546c08ed294f5650b691b7aadaf47ee18  /usr/local/bin/tox-bootstrapd
+b3fb4157d7fc6cd3455f40020bb6b69e5bab4bbdb6ce66d5bc7095146ba5a49e  /usr/local/bin/tox-bootstrapd

toxcore/network.c

@@ -1689,7 +1689,7 @@ bool net_connect(const Logger *log, Socket sock, const IP_Port *ip_port)
         if (!should_ignore_connect_error(error)) {
             char *net_strerror = net_new_strerror(error);
             LOGGER_ERROR(log, "failed to connect to %s:%d: %d (%s)",
-                         ip_str.buf, ip_port->port, error, net_strerror);
+                         net_ip_ntoa(&ip_port->ip, &ip_str), ip_port->port, error, net_strerror);
             net_kill_strerror(net_strerror);
             return false;
         }