Revert "fonts: Dont memcpy with nullptr in SkRemoteGlyphCache"

This reverts commit 7e7369f7131d0b00f87cfb94e0fcbf91b02b4ee6.

Reason for revert: 3 of 5

Original change's description:
> fonts: Dont memcpy with nullptr in SkRemoteGlyphCache
> 
> The behaviour is undefined and causes ASAN bots to complain.
> 
> Bug: skia:7515
> Change-Id: I454714ab9047a6fced5ab7bfdbc12214d728eadf
> Reviewed-on: https://skia-review.googlesource.com/125029
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Khusal Sagar <khushalsagar@chromium.org>

TBR=herb@google.com,brianosman@google.com,khushalsagar@chromium.org

Change-Id: I6548019d7bf34b38f964234034e58af09d0b8508
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:7515
Reviewed-on: https://skia-review.googlesource.com/125262
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed