Painting item sprite is odd and appears off-center as a result

The bug

The item form of paintings is an odd numebr of pixels wide rather than even; this can be seen by the fact that it has a "hanger" section which only has one pixel at the top, whereas item frames have two.

As a result of this, the item appears slightly off-center, notably in inventory slots and when framed

How to fix

The painting item sprite should be changed to be even.