Configs with no running channels should exit or fail

[tribal-tec]

If the config has only one single node which fails at configInit() for whatever reason, the config still reports 'Config init sucessful' and tries to render frames, which apparently cannot give any reasonable results:

30910 R PN2co9Loc qualizer/eq/client/config.cpp:1234 1066 Finished frame 0 was not locally unlocked, enforcing unlock
30910 R PN2co9Loc qualizer/eq/client/config.cpp:1234 1067 Finished frame 1 was not locally unlocked, enforcing unlock
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This is the default behavior if IATTR_ROBUSTNESS is on or auto. Setting it to off gives the expected behavior.

Imo, even if with robustness set to on it should ensure to have at least one up and running node to continue rendering.

[eile]

Interesting problem - the same applies to runtime failures, i.e., as soon as nActiveChannels == 0 -> Config::isRunning() = false?