Auto merge of #2164 - lsalzman:fix-embedded-bitmaps, r=pcwalton
Auto merge of #2164 - lsalzman:fix-embedded-bitmaps, r=pcwalton

fix handling of embedded bitmaps in FreeType font backend

This fixes a small regression I accidentally made with #2120. The prior "(flags & FONT_EMBEDDED_BITMAP) == 0" statement needed to be !contains() rather than just contains().

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