Pillow: Invalid free in FreeType glyph rendering when a stroker is active

Summary When text is drawn with a non-zero stroke width, Pillow creates a FreeType stroker and then loads each glyph. If FTLoadGlyph fails for a glyph, the cleanup path calls FTDoneGlyph on the glyph variable. That variable is not initialized before the first measurement loop, and in the render...