RFR: JDK-8038244: (fs) Check return value of malloc in Java_sun_nio_fs_AixNativeDispatcher_getmntctl()

[Matthias Baesken]

There's a call to malloc() in Java_sun_nio_fs_AixNativeDispatcher_getmntctl() where we don't check for a potentially NULL return value (i.e. out of memory).

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Commit messages:
 - JDK-8038244

Changes: https://git.openjdk.org/jdk/pull/16151/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16151&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8038244
  Stats: 6 lines in 1 file changed: 4 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/16151.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16151/head:pull/16151

PR: https://git.openjdk.org/jdk/pull/16151