rando: use pythonic way to test if a list is empty in mini solver (it's faster).
rando: use pythonic way to test if a list is empty in mini solver (it's faster).

theonlydude/RandomMetroidSolver,theonlydude/RandomMetroidSolver,theonlydude/RandomMetroidSolver,theonlydude/RandomMetroidSolver,theonlydude/RandomMetroidSolver