[Rev 02] RFR: 8241476: Linux build warning issued on updated compilers (Ubuntu 18.04.4 / 20.04)

[Thiago Milczarek Sayao]

> Simple fix to remove annoying warnings.

Thiago Milczarek Sayao has updated the pull request incrementally with one additional commit since the last revision:

  Sep cppFlags and cFlags

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

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/150/files
  - new: https://git.openjdk.java.net/jfx/pull/150/files/3164ab36..67adeaee

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/150/webrev.02
 - incr: https://webrevs.openjdk.java.net/jfx/150/webrev.01-02

  Stats: 22 lines in 1 file changed: 3 ins; 2 del; 17 mod
  Patch: https://git.openjdk.java.net/jfx/pull/150.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/150/head:pull/150

PR: https://git.openjdk.java.net/jfx/pull/150