Remove unsafe align4 call

Align by 4 safely before calling malloc.

BUG=chromium:763972

Change-Id: I9278ae0df516adf3eb96fc390ad7318a47cbefa4
Reviewed-on: https://skia-review.googlesource.com/49760
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Herb Derby <herb@google.com>
1 file changed