"Zoom fit" function does not work correctly

[MMendinov]

1) Summary: "Zoom fit" function does not work correctly 2) Description: The user clicks the "Zoom fit" button and gets an image that can fit into the work area, but it is not positioned correctly. 3) Environment: Windows 10 x64, Build 18362.720, Version 1903 LazPaint 7.1.6, 64-bit 4) Steps to reproduce

• select the "View" tab in the menu and click on the "Zoom fit" item, or on the top panel click the "Zoom fit" button

5) Expected behavior The image is displayed in full. 6) Actual behavior The image is not fully visible in the work area. 7) Attachment:

https://user-images.githubusercontent.com/94738204/142758859-38e8f930-84db-4948-9272-9fc0d0202702.mp4

8) Severity - Major 9) Priority- High

[circular17]

Duplicate of https://github.com/bgrabitmap/lazpaint/issues/405