fix(gfx): rectangle_fill is one pixel to small

gfx_rectangle_fill draws rectangles one pixel too small. gfx_rectangle works correctly by including the end coordinate in the drawn rectangle. Drawing a filled rectangle on the other hand stops before reaching the end coordinate.

Looks good to me! Thanks for keeping our codebase clean.

However, I'm only a bot - so a human will still have to approve this request.

cc @msgctl

added 1-Bug 3-Epicardium 6 - Needs Review labels

added 6 - Needs Testing label and removed 6 - Needs Review label

changed milestone to %v1.9

merged

mentioned in commit 05ef8319