RFR: 8291959: FileFontStrike#initNative does not properly initialize IG Table on Windows [v2]

[Julian Waters]

> FileFontStrike#initNative calls memset with LCDLUTCOUNT (the maximum length) as the number of bytes to zero out, which is incorrect as the elements are not 1 byte in size (unsigned char*), and will result in only part of the IG Table being correctly zeroed. This is more correctly resolved by passing sizeof igLUTable to memset instead.

Julian Waters has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'openjdk:master' into patch-5
 - Pass proper byte size to memset

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9772/files
  - new: https://git.openjdk.org/jdk/pull/9772/files/4a074c93..0d484cde

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9772&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9772&range=00-01

  Stats: 735 lines in 31 files changed: 572 ins; 37 del; 126 mod
  Patch: https://git.openjdk.org/jdk/pull/9772.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9772/head:pull/9772

PR: https://git.openjdk.org/jdk/pull/9772