engine list report not getting called

[tehn]

noticed that engine.names is empty

https://github.com/monome/norns/blob/dev/matron/src/weaver.c#L1625

calling report_engines() bonks

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was attempting to do a check on engine.name for scripts against available engines to warn the user if the engine is missing instead of just failing poorly

[catfact]

@tehn interesting... i didn't have this problem with we at commit a7c1943b5c1e1316f8dbedeffce93b8564fe7f50 (april 1) and norns at current master.

then i pulled we/master just now (april 8) and got the crash/hang in matron apparently. breaking out the debugger...

[tehn]

good chance i broke something when touching (theoretically cleaning up) a lot of weaver bits while i was implementing softcut glue. i can take a look later tonight.

[tehn]

fixed by #808