RFR: 8311647: Memory leak in Java_jdk_internal_org_jline_terminal_impl_jna_linux_CLibraryImpl_ttyname_1r

[Jenny Shivayogi]

Allocated data on error path is deleted before return

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Commit messages:
 - deleting allocated data before return

Changes: https://git.openjdk.org/jdk/pull/14832/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14832&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8311647
  Stats: 2 lines in 2 files changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14832.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14832/head:pull/14832

PR: https://git.openjdk.org/jdk/pull/14832