[bug] Issue with parsing JSON

[vojtechjelinek]

Describe the bug
Issue with parsing some JSONs. I'm able to fix this error by adding one newline into the JSON file.

When the contents of the file is:

[{"Event": {"System": {"EventID": "123", "EventRecordID": "1111"}, "UserData": {"AddServiceID": null}}}]

the command fails with:

"path/to/json/logs.json"                                                                                                                           thread 'main' panicked at src/main.rs:1631:22:
called `Option::unwrap()` on a `None` value
stack backtrace:
   0:     0x55b1e53a7193 - <unknown>
   1:     0x55b1e5059a3c - <unknown>
   2:     0x55b1e537057d - <unknown>
   3:     0x55b1e53a873e - <unknown>
   4:     0x55b1e53a8323 - <unknown>
   5:     0x55b1e53a92e9 - <unknown>
   6:     0x55b1e53a8de8 - <unknown>
   7:     0x55b1e53a8d76 - <unknown>
   8:     0x55b1e53a8d61 - <unknown>
   9:     0x55b1e4f42a14 - <unknown>
  10:     0x55b1e4f42be2 - <unknown>
  11:     0x55b1e4fb657f - <unknown>
  12:     0x55b1e4f93c0d - <unknown>
  13:     0x55b1e4f9017d - <unknown>
  14:     0x55b1e4f8a6aa - <unknown>
  15:     0x55b1e52387f3 - <unknown>
  16:     0x55b1e4fbf7d2 - <unknown>
  17:     0x7f2b14829d90 - __libc_start_call_main
                               at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
  18:     0x7f2b14829e40 - __libc_start_main_impl
                               at ./csu/../csu/libc-start.c:392:3
  19:     0x55b1e4f7efd5 - <unknown>
  20:                0x0 - <unknown>

when I modify the file to be:

[
{"Event": {"System": {"EventID": "123", "EventRecordID": "1111"}, "UserData": {"AddServiceID": null}}}]

it starts working.

Step to Reproduce
Steps to reproduce the behavior:

1. Run RUST_BACKTRACE=full ./hayabusa-2.12.0-lin-x64-gnu csv-timeline -J --file path/to/json/logs.json

Environment (please complete the following information):

• OS: Ubuntu 22.04.3 LTS
• hayabusa version: 2.12.0