Coverity couldn't tell that 'addrport' was always non-NULL at this point in the function, so I'm adding an explicit check. This closes CID 1374060.
@@ -6592,6 +6592,8 @@ parse_port_config(smartlist_t *out,
if (unix_socket_path) {
port = 1;
} else if (is_unix_socket) {
+ if (BUG(!addrport))
+ goto err; // LCOV_EXCL_LINE unreachable, but coverity can't tell that
unix_socket_path = tor_strdup(addrport);
if (!strcmp(addrport, "0"))
port = 0;