Crash when saving to a long file path

[whosmatt]

A long file path causes splicedd to crash instantly when trying to save a file (by dragging). I believe this to be the 260 char (256 usable) limit when using windows legacy path handling.

Steps to reproduce:

1. Create folder with 256-character file name. Can be anywhere but I put it into C:. Here are 256 a's:
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
2. Select this folder as the sample path in splicedd. ]
3. Try to drag any sample.