Crash and warning fixes

libretro / vice-libretro

Versatile Commodore 8-bit Emulator

GNU General Public License v2.0

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Closed sonninnos closed 3 years ago

sonninnos commented 3 years ago

Major problems found on Linux that do not exist in Windows:

The way path_remove_extension() was used was doing the job twice in Linux, causing empty paths
opendir() on a non-existent directory is a bad idea in Linux, but harmless in Windows

Closes #338

And some other minor warnings removed.