tools: Update to pngquant 2.7.1-13-gc4408f3.

Fixes a few bugs.
This commit is contained in:
Bradley Sepos 2016-08-12 08:00:14 -04:00
parent 86573c1304
commit 1da276ed5c

@ -1 +1 @@
Subproject commit 6ad92e439f5ba3e49da0c06773c752bb89068fd1
Subproject commit c4408f3f4c00b414b4ffdb746b54cc7fa8a8ef39