RFR: 8304295: harfbuzz build fails with GCC 7 after JDK-8301998 [v2]

[Joshua Cao]

> Builds successfully with GCC 7
> 
> 
> gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-15)
> Copyright (C) 2017 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Joshua Cao has updated the pull request incrementally with one additional commit since the last revision:

  Add a comment clarifying noexcept-type is only required for GCC 7

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/13253/files
  - new: https://git.openjdk.org/jdk/pull/13253/files/51e9a59f..d2218410

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13253&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13253&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/13253.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13253/head:pull/13253

PR: https://git.openjdk.org/jdk/pull/13253