JDK-8358077:sun.tools.attach.VirtualMachineImpl::checkCatchesAndSendQuitTo on 
Linux leaks file handles after JDK-8327114

modified the code to place the `Files::lines` in a `try-with-resources` block 
in order to autoclose the `Stream` and underlying file resources immediately.

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

Commit messages:
 - JDK-8358077:sun.tools.attach.VirtualMachineImpl::checkCatchesAndSendQuitTo 
on Linux leaks file handles after JDK-8327114

Changes: https://git.openjdk.org/jdk/pull/25529/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25529&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8358077
  Stats: 7 lines in 1 file changed: 6 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25529.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25529/head:pull/25529

PR: https://git.openjdk.org/jdk/pull/25529

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