Merge tag 'audit-pr-20201012' of git://

Pull audit updates from Paul Moore:
 "A small set of audit patches for v5.10.

  There are only three patches in total, and all three are trivial fixes
  that don't really warrant any explanations beyond their descriptions.
  As usual, all three patches pass our test suite"

* tag 'audit-pr-20201012' of git://
  audit: Remove redundant null check
  audit: uninitialize variable audit_sig_sid
  audit: change unnecessary globals into statics