RFR: 8261547: Minor memory leak reported for Metal Rendering pipeline [v2]

[Prasanta Sadhukhan]

> Memory leak fix for couple of strings.

Prasanta Sadhukhan has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:

 - Merge master
 - Memory leak fix

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Changes: https://git.openjdk.java.net/lanai/pull/182/files
 Webrev: https://webrevs.openjdk.java.net/?repo=lanai&pr=182&range=01
  Stats: 6 lines in 1 file changed: 4 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/lanai/pull/182.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/182/head:pull/182

PR: https://git.openjdk.java.net/lanai/pull/182