tree afbbc07f0d17ce3835c09c73327726e046c0db9a
parent 8a7ec52c8b0b3b3356ad3b3a7052ad54d10a4581
author John Bowler <jbowler@acm.org> 1305762684 -0500
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> 1305762684 -0500

[devel] png_set_background+png_expand_16 did not interwork correctly.

 This problem is present in 1.5.2; if png_set_background is called with
 need_expand false and the matching 16 bit color libpng erroneously just treats
 it as an 8-bit color because of where png_do_expand_16 is in the transform
 list.  This simple fix reduces the supplied colour to 8 bits, so it gets
 smashed, but this is better than the current behavior.