RFR: 8338565: Test crashed: assert(is_path_empty()) failed: invariant

[Markus Grönlund]

Greetings,

This adjustment removes an assert which is unnecessarily strong.

Its ok to reuse the _path_buffer, because every use is a full overwrite, i.e. a clobber.

Tests: jdk_jfr

Thanks
Markus

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

Commit messages:
 - 8338565

Changes: https://git.openjdk.org/jdk/pull/22021/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22021&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8338565
  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22021.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22021/head:pull/22021

PR: https://git.openjdk.org/jdk/pull/22021