Bug when passing the same file to two arguments

[Rog3rSm1th]

When passing the same file to two arguments, there is a collision in the reports folder.

For example:

import frelatage 
from PIL import Image

def fuzz_gif(input_file1, input_file2):
    Image.open(input_file)
    Image.open(input_file)

gif_file = frelatage.Input(file=True, value="image.gif")

f = frelatage.Fuzzer(fuzz_gif, [[gif_file], [gif_file]])
f.fuzz()

In the reports, both image.gif will be written in the same file, making it impossible to reproduce the bug. The structure of the report folders should therefore be modified in this way:

├── out
    │   ├── id:<crash ID>,err:<error type>,err_pos:<error>,err_file:<error file>,err_pos:<err_pos>
    │       ├── input
    │       ├── 0
    │           ├── image.gif
    │       ├── 1
    │           ├── image.gif