Fix issue #7331 A Drive with "Z" letter assigned to it on Windows will be shown.
Fix issue #7331
A Drive with "Z" letter assigned to it on Windows will be shown.

(cherry picked from commit 20d6af6028c97c6135faa0d937e9d0a458fb0fd1)

pixelpicosean/my-godot-2.1,pixelpicosean/my-godot-2.1,pixelpicosean/my-godot-2.1,pixelpicosean/my-godot-2.1,pixelpicosean/my-godot-2.1