RFR: 8253824: Revert JDK-8253089 since VS warning C4307 has been disabled

[Aleksey Shipilev]

This reverts commit 3f455f09dc738b7c76210c1080df2aaa8e19a19d.

Testing:
 - [x] Linux x86_64 {fastdebug,release,slowdebug} builds
 - [ ] Windows MSVC 2017 build (cannot test it locally)

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

Commit messages:
 - 8253824: Revert JDK-8253089 since VS warning has been disabled C4307

Changes: https://git.openjdk.java.net/jdk/pull/426/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=426&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253824
  Stats: 8 lines in 2 files changed: 0 ins; 0 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk/pull/426.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/426/head:pull/426

PR: https://git.openjdk.java.net/jdk/pull/426