Correct statistics for pool
Correct statistics for pool

Calculation of percentage of used addresses has been way off as 'used /
free' was used rather than 'used / total'. Don't know how that got in
there - brainfart probably :(

Fixes #553.

SoundGoof/NIPAP,SoundGoof/NIPAP,ettrig/NIPAP,plajjan/NIPAP,plajjan/NIPAP,SoundGoof/NIPAP,SoundGoof/NIPAP,plajjan/NIPAP,garberg/NIPAP,SpriteLink/NIPAP,plajjan/NIPAP,bbaja42/NIPAP,fredsod/NIPAP,ettrig/NIPAP,garberg/NIPAP,fredsod/NIPAP,SoundGoof/NIPAP,ettrig/NIPAP,fredsod/NIPAP,SpriteLink/NIPAP,ettrig/NIPAP,ettrig/NIPAP,fredsod/NIPAP,bbaja42/NIPAP,garberg/NIPAP,bbaja42/NIPAP,garberg/NIPAP,fredsod/NIPAP,bbaja42/NIPAP,SoundGoof/NIPAP,bbaja42/NIPAP,SpriteLink/NIPAP,plajjan/NIPAP,ettrig/NIPAP,garberg/NIPAP,SpriteLink/NIPAP,bbaja42/NIPAP,plajjan/NIPAP,garberg/NIPAP,SpriteLink/NIPAP,fredsod/NIPAP,SpriteLink/NIPAP