Any news story about a fatality on the Great White Way should instantly bring to mind everyone's favorite web slinger, but while Spider-Man: Turn Off the Dark has maimed many, it has yet to actually kill anyone. (And let's hope it stays that way.) But it's another musical — the far less death-defying revival of How to Succeed in Business Without Really Trying — that had to contend with the sad loss of a crew member on Wednesday night, just minutes before the curtain went up on its 100th performance.