🔧 fix access to a variable before assignement

[BernardoSilva]

fixes #18

No more complaints about variable being accessed before assignment:

~/dev/apt-hunter/repo/APT-Hunter fix-error-on-using-variable-before-assignement* 32s
.venv ❯ python APT-Hunter.py -p ~/dev/logs-windows -o output_file

  /$$$$$$  /$$$$$$$  /$$$$$$$$         /$$   /$$                       /$$
 /$$__  $$| $$__  $$|__  $$__/        | $$  | $$                      | $$
| $$  \ $$| $$  \ $$   | $$           | $$  | $$ /$$   /$$ /$$$$$$$  /$$$$$$    /$$$$$$   /$$$$$$
| $$$$$$$$| $$$$$$$/   | $$    /$$$$$$| $$$$$$$$| $$  | $$| $$__  $$|_  $$_/   /$$__  $$ /$$__  $$
| $$__  $$| $$____/    | $$   |______/| $$__  $$| $$  | $$| $$  \ $$  | $$    | $$$$$$$$| $$  \__/
| $$  | $$| $$         | $$           | $$  | $$| $$  | $$| $$  | $$  | $$ /$$| $$_____/| $$
| $$  | $$| $$         | $$           | $$  | $$|  $$$$$$/| $$  | $$  |  $$$$/|  $$$$$$$| $$
|__/  |__/|__/         |__/           |__/  |__/ \______/ |__/  |__/   \___/   \_______/|__/

                                                                By : Ahmed Khlief , @ahmed_khlief
                                                                Version : 2.0
                                                                                                  
Analyzing /home/bernardosilva/dev/logs-windows/Security.evtx
Analyzing /home/bernardosilva/dev/logs-windows/Application.evtx
Analyzing /home/bernardosilva/dev/logs-windows/System.evtx
Time Sketch Report saved as output_file_TimeSketch.csv
Logon Events Report saved as output_file_Logon_Events.csv
Report saved as output_file_Report.xlsx