RFR: 8268078: ClassListParser::_interfaces should be freed [v2]

[Calvin Cheung]

> This patch frees the `_interfaces`, `_indy_items`, and `_id2klass_table` of `ClassListParser` in its destructor.
> It also fixes the non-NULL check at line 88.
> 
> - [x] mach5 tiers 1, 2 tests

Calvin Cheung has updated the pull request incrementally with one additional commit since the last revision:

  revert the changes for freeing the _id2klass_table

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4498/files
  - new: https://git.openjdk.java.net/jdk/pull/4498/files/58f7c03e..903c9380

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4498&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4498&range=00-01

  Stats: 16 lines in 2 files changed: 0 ins; 16 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4498.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4498/head:pull/4498

PR: https://git.openjdk.java.net/jdk/pull/4498