RFR: 8354878: File Leak in CgroupSubsystemFactory::determine_type of cgroupSubsystem_linux.cpp:300

[Casper Norrbin]

Hi,

There's a file descriptor in `cgroupSubsystem_linux.cpp` that isn't closed if we successfully open it but can't read from it. In that case, the open descriptor should still be closed before returning.

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Commit messages:
 - still close file descriptor if we fail to read

Changes: https://git.openjdk.org/jdk/pull/25093/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25093&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354878
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25093.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25093/head:pull/25093

PR: https://git.openjdk.org/jdk/pull/25093