RFR: 8284458: CodeHeapState::aggregate() leaks blob_name [v3]

[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:

  Fix

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8132/files
  - new: https://git.openjdk.java.net/jdk/pull/8132/files/c49ec0bb..7519e2a9

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8132&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8132&range=01-02

  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 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