--fixed-user-size breaks user name distance

[FrostKiwi]

As defined by line

Gource/src/gource.cpp

Line 2273 in 5109bb9

if(gGourceSettings.fixed_user_size) scaled_dims *= (-camera.getPos().z / -starting_z);

the --fixed-user-size feature is achieved by scaling the avatar by the camera distance. However, the thing that this approach ignores, is that this messes with the user-name position, as the user name is still placed as a function of the avatar size before the --fixed-user-size multiplier.

As a result, the name distance when starting out or zoomed in is very big...

...and later on when zoomed out, intersects with the avatar.