Dangling reference in aprs_pico_init()

[ArkinSolomon]

A dangling reference is retained to the configuration structs here. This is related to #1, and causes an assertion if the memory is reused. Moving the variables out of the stack fixes this issue. pico_audio stores these configuration structs by reference and not by value.

[eleccoder]

Hi Arkin, oh yes, that's definitively an issue, it needs to be fixed. Thanks for reporting !