Cubo Muerte mission failed to trigger black hole generator

[smcameron]

Ran through the Cubo Muerte mission while testing recent changes to render OBJTYPE_BLOCK objects on Nav screen, and after ejecting the black hole generator within the cube, retreating to a safe distance, and transmitting 123 on channel 666 ... nothing happened.

Possible I took too long, and the black hole generator floated too far away (i.e. through the walls of the cube) to consume anything and the black hole that was created was just floating there in space with nothing to consume, but... this is anticlimactic at best, and indistinguishable from a bug. I think there is no collision detection between cargo containers and OBJTYPE_BLOCK, so I expect the cargo container could indeed float too far away. But this is speculation, I don't actually know exactly why nothing happened when I tried it.

[smcameron]

• e5bbec7 Fix bug in cubo muerte mission to make black hole generator listen on correct channel

Still saw the same failure one time with this applied, but another time it worked, so not sure what's going on there.