RFR: JDK-8317959: Check return values of malloc in native java.base coding [v2]

[Matthias Baesken]

> There are a few remaining places in java.base where the return value NULL-check of malloc is missing. This should better be adjusted.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  doabort in check method in case no memory can be allocated

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16160/files
  - new: https://git.openjdk.org/jdk/pull/16160/files/24fbb465..109b13c3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16160&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16160&range=00-01

  Stats: 4 lines in 1 file changed: 3 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/16160.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16160/head:pull/16160

PR: https://git.openjdk.org/jdk/pull/16160