Fix for Issue #1505

[brianpopow]

Prerequisites

• I have written a descriptive pull-request title
• I have verified that there are no overlapping pull-requests open
• I have verified that I am following matches the existing coding patterns and practice as demonstrated in the repository. These follow strict Stylecop rules 👮.
• I have provided test coverage for my change (where applicable)

Description

This fixes an Issue when creating the palette: Instead of this.maxColors, the constant QuantizerConstants.MaxColors was used (which can be bigger than maxColors).

[codecov]

Codecov Report

Merging #1506 (b3146a7) into master (da7a8b7) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1506   +/-   ##
=======================================
  Coverage   83.52%   83.52%           
=======================================
  Files         741      741           
  Lines       32672    32672           
  Branches     3662     3662           
=======================================
  Hits        27289    27289           
  Misses       4669     4669           
  Partials      714      714           

Flag	Coverage Δ
unittests	83.52% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...Processors/Quantization/OctreeQuantizer{TPixel}.cs	95.83% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update da7a8b7...b3146a7. Read the comment docs.

[JimBobSquarePants]

Perfect. Thanks for getting this fixed so quickly!