Bug 1239603 - don't reject format 12 cmap with odd encoding. r=jfkthame

This fixes an issue affecting the use of Big Caslon under OSX which uses an improperly labeled format12 cmap with platform=0/encoding=1. Technically, a Unicode 1.1 encoding implies a font that's not entirely compatible with more recent versions of Unicode (e.g. Hangul range is different). But since this seems to be simply a font error and not a real problem for format12 cmaps, ignore this inconsistency.

gfx/thebes/gfxFontUtils.cpp

@@ -388,7 +388,7 @@ gfxFontUtils::ReadCMAPTableFormat14(const uint8_t *aBuf, uint32_t aLength,
     #define acceptableUCS4Encoding(p, e, k) \
         (((p) == PLATFORM_ID_MICROSOFT && (e) == EncodingIDUCS4ForMicrosoftPlatform) && (k) != 12 || \
          ((p) == PLATFORM_ID_UNICODE   && \
-          ((e) == EncodingIDDefaultForUnicodePlatform || (e) >= EncodingIDUCS4ForUnicodePlatform)))
+          ((e) != EncodingIDUVSForUnicodePlatform)))
 #else
     #define acceptableFormat4(p,e,k) ((p) == PLATFORM_ID_MICROSOFT && (e) == EncodingIDMicrosoft)