Description of problem:
Clicked on Variety icon & selected History. From the presented images in History , I deleted all the images one by one. Deleting the last image crashed Variety.

Version-Release number of selected component:
variety-0.8.10-1.fc38

Additional info:
reporter:       libreport-2.17.11
kernel:         6.4.10-200.fc38.x86_64
cgroup:         0::/user.slice/user-1000.slice/user/app.slice/app-variety
uid:            1000
reason:         ThumbsWindow.py:382:autoscroll_step:ZeroDivisionError: float division by zero
executable:     /usr/bin/variety
type:           Python3
package:        variety-0.8.10-1.fc38
runlevel:       N 5
exception_type: ZeroDivisionError
crash_function: autoscroll_step
interpreter:    python3-3.11.4-1.fc38.x86_64
comment:        Clicked on Variety icon & selected History. From the presented images in History , I deleted all the images one by one. Deleting the last image crashed Variety.
cmdline:        /usr/bin/python3 /usr/bin/variety --profile /home/user/.config/variety/

Truncated backtrace:
ThumbsWindow.py:382:autoscroll_step:ZeroDivisionError: float division by zero

Traceback (most recent call last):
  File "/usr/lib/python3.11/site-packages/variety/Util.py", line 876, in cb
    args[0](*args[1:])
  File "/usr/lib/python3.11/site-packages/variety/ThumbsWindow.py", line 407, in _go
    self.autoscroll_step(
  File "/usr/lib/python3.11/site-packages/variety/ThumbsWindow.py", line 382, in autoscroll_step
    speed = 30 * (current - right_limit) ** 3 / (total_size - right_limit) ** 3
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ZeroDivisionError: float division by zero

Local variables in innermost frame:
self: <ThumbsWindow.ThumbsWindow object at 0x7f57b8dea640 (variety+ThumbsWindow+ThumbsWindow at 0x555fb6119ba0)>
adj: <Gtk.Adjustment object at 0x7f57b8e7c240 (GtkAdjustment at 0x555fb62e3690)>
total_size: 0
current: 18.0
left_limit: 0.0
right_limit: 0.0