Fix MSAN where glyphs are uninitialized in tests
Fix MSAN where glyphs are uninitialized in tests

Change-Id: I1d8874e1371ce2ddeba119b097d018ad94aa474c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/541016
Commit-Queue: Herb Derby <9e12a3d2bbf73546e47cc9958f6ba8f3215b7eaf@google.com>
Reviewed-by: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>

google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia