win32: regression in Glyph -> Path conversion
There is a regression in the win32 backend, where converting a series of glyphs to a path yelds an out of memory error if there is a space glyph. See issue in Pango issue tracker.
The regression was introduced by commit 19982393 in cairo-win32-font.c:107.
The point is that GetGlyphOutline validly returns 0 as buffer size for the space character. Using _cairo_malloc then fails because of that.