RFR: 8284458: CodeHeapState::aggregate() leaks blob_name [v2]

[Zhengyu Gu]

> Please review this small patch to fix a possible memory leak.
> 
> Test:
> - [x] hotspot_serviceability

Zhengyu Gu has updated the pull request incrementally with one additional commit since the last revision:

  Cleanup

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8132/files
  - new: https://git.openjdk.java.net/jdk/pull/8132/files/be802be7..c49ec0bb

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8132&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8132&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8132.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8132/head:pull/8132

PR: https://git.openjdk.java.net/jdk/pull/8132