De-mode core::stackwalk::frame_address

[catamorphism]

This function still takes its argument by explicit ++.

[catamorphism]

also, std::net_tcp::on_tcp_read_cb

[catamorphism]

I'm doing this, just waiting for tests.

[catamorphism]

Done, pending #5595

[catamorphism]

Fixed in b1c0a66