RFR: 8277224: sun.security.pkcs.PKCS9Attributes.toString() throws NPE [v2]

[Sean Coffey]

> Some elements of the PKCS9Attribute.PKCS9_OIDS array may have null value. The PKCS9Attributes.toString() and PKCS9Attributes.getAttributes() methods need to account for that.

Sean Coffey has updated the pull request incrementally with one additional commit since the last revision:

  test update

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6433/files
  - new: https://git.openjdk.java.net/jdk/pull/6433/files/9755fa81..a134fab5

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6433&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6433&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6433.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6433/head:pull/6433

PR: https://git.openjdk.java.net/jdk/pull/6433