All through that diner scene we keep hearing the bell ring as the door opens when random people arrive, each time that happens we see the door and who's coming in from Tony's POV, we're seeing that person enter the diner through his eyes.
The guy in the member's only jacket comes in, looking shifty as hell, sits at the bar and keeps looking over at Tony. He then goes to the toilet and the camera follows him as he walks by, obviously showing he's a relevant person to what's going on.
Meadow finally finishes parking and is heading into the diner and at the moment we've flicked to Tony's POV each other time someone's entered it instead cuts to black. Meaning Tony's POV has gone.
Also in the penultimate episode Tony is sitting on the bed with his rifle waiting for hit, and has a flashback to his conversation with Bobby on the lake, and recalls Bobby saying "you probably don't even hear it when it happens, right?", which is why we don't hear any gun shot.
Meadow runs to the door, the bell rings, and nothing.
He's dead. It's perfectly clear and was executed brilliantly.