RFR: 8266170: -Wnonnull happens in classLoaderData.inline.hpp

[Yasumasa Suenaga]

We can see compiler warnings in dictionary.cpp as following on GCC 11. Conditions in `guarantee` should be changed.


In file included from /home/ysuenaga/git-forked/jdk/src/hotspot/share/utilities/globalDefinitions.hpp:29,
                 from /home/ysuenaga/git-forked/jdk/src/hotspot/share/memory/allocation.hpp:29,
                 from /home/ysuenaga/git-forked/jdk/src/hotspot/share/classfile/classLoaderData.hpp:28,
                 from /home/ysuenaga/git-forked/jdk/src/hotspot/share/precompiled/precompiled.hpp:34:
In member function 'oop ClassLoaderData::class_loader() const',
    inlined from 'void Dictionary::verify()' at /home/ysuenaga/git-forked/jdk/src/hotspot/share/classfile/dictionary.cpp:635:3:

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Commit messages:
 - 8266170: -Wnonnull happens in classLoaderData.inline.hpp

Changes: https://git.openjdk.java.net/jdk/pull/3753/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3753&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8266170
  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3753.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3753/head:pull/3753

PR: https://git.openjdk.java.net/jdk/pull/3753