[crac] RFR: Ignore errors parsing classpath

[Radim Vansa]

This test is relevant mostly on Windows - trying to use URI in the form of `file:/C:/path/to/...` as classpath element. On Linux, this is parsed as two items as `File.pathSeparator` is `:`. However on Windows the second colon triggers an exception.

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Commit messages:
 - Ignore errors parsing classpath

Changes: https://git.openjdk.org/crac/pull/149/files
 Webrev: https://webrevs.openjdk.org/?repo=crac&pr=149&range=00
  Stats: 10 lines in 2 files changed: 7 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/crac/pull/149.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/149/head:pull/149

PR: https://git.openjdk.org/crac/pull/149