In GTKPainter.paintPopupMenuBackground method, `img != null` condition will always be true, because it's only checked after `img.getRGB` method is called and that means img can't be `null`. So, the null check condition is removed. CI testing is ok.
------------- Commit messages: - remove null check Changes: https://git.openjdk.org/jdk/pull/20308/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20308&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8336879 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/20308.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20308/head:pull/20308 PR: https://git.openjdk.org/jdk/pull/20308
