[Switch] setting 'WHDLoad support' to 'Files' crashes before starting the game

Created by: ms2048

I'm on RetroArch 1.9.0 on Nintendo Switch with newest core available from Core Updater (PUAE 2.6.1 e187a61d).

When I try to open any .lha game with an option 'Media -> WHDLoad Support' set to 'Files', RetroArch crashes with 'The software was closed because an error occured'.

Fortunately, setting it to 'HDFs' works perfectly, though.