Fixing cropped image at bottom

According to
https://github.com/xbmc/xbmc/commit/cd62b293c0ad6a61e0441cbf915a3fac61d36c9e
looking at the images they are both slightly cropped at bottom by about
2 maybe 3 pixels.

This image is from the official logo package V1.0 named
alternate_3_logo.ai

Used this image because the words media center are too small to read and
thus invisible at this size 48x48 and kept all other elements of
original logo obviously only smaller.

Ridiculous reason but its like having code missing from XBMC.