Full armour icon doesn't match empty armour icon

The bug

This bug is best seen in the half-full armour icon were 1 black pixel has shifted to the side (see red squares in attachment),which corresponds to the full icon (see bleu square in attachment).

 

Original description:
If you have an odd number of armor points, the half armor-icon is missing the inner corner pixel (underneath the arms in the dark grey area). Also the white pixel that represents sort of a shine is moved 1 pixel to the side.
The full and empty icons do have this pixel (darker grey when full, black when empty).