Draft: app: Fix GimpScaleComboBox width for values less than 1%
requested to merge StanislavGrinkov/gimp:wip/sgrinkov/bug-4055-zoom-box-too-small-for-scales-less-than-100-pct into master
GimpScaleComboBox width was calculated wrong for scales less than 1% resulting in less than ideal entry width.
Resolves: #4055 (GNOME/gimp tracker)
Edited by Stanislav Grinkov