[Ohrrpgce] SVN: teeemcee/8515 Fix paletted graphics (including text) drawn with wrong colours on Mac.

[subversion at HamsterRepublic.com]

teeemcee
2017-03-11 06:14:56 -0800 (Sat, 11 Mar 2017)
465
Fix paletted graphics (including text) drawn with wrong colours on Mac.

Actually, this was nothing to do with Mac, but was caused by passing 0 or -1
to C as a bool argument, and clang assuming that a bool is either 0 or 1
(it generated asm that tested "trans == 1" in one place and "trans != 0" in
another, leading to an impossible branch being taken, where the Palette16 ptr
was treated as if it were NULL).

This only happened on Mac because it's clang-specific.
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U   wip/blit.c