Prevent crash when trying to register a port with a disconnected engine.
git-svn-id: svn://localhost/ardour2/branches/3.0@7925 d708f5d6-7413-0410-9779-e7cbd77b26cf
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@ -51,6 +51,10 @@ Port::Port (std::string const & n, DataType t, Flags f)
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assert (_name.find_first_of (':') == std::string::npos);
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if (!_engine->connected()) {
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throw failed_constructor ();
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}
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if ((_jack_port = jack_port_register (_engine->jack (), _name.c_str (), t.to_jack_type (), _flags, 0)) == 0) {
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throw failed_constructor ();
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}
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