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  Branch: refs/heads/stable-4.12.x
  Home:   https://github.com/xrootd/xrootd
  Commit: 7a3884a58ee706ecc032241d6c634e82df474f7c
      https://github.com/xrootd/xrootd/commit/7a3884a58ee706ecc032241d6c634e82df474f7c
  Author: Brian Bockelman <[log in to unmask]>
  Date:   2020-04-23 (Thu, 23 Apr 2020)

  Changed paths:
    M src/XrdAcc/XrdAccEntity.hh

  Log Message:
  -----------
  Initialize the XrdAccEntityInfo structure.

When one vorg is provided and no groups are provided, the `grup`
data memeber may be uninitialized on use.  This has resulted in
periodic segfaults on the SciTokens ACC provider; I'm guessing that
`grup` quite often has an initial value of `nullptr`, even when
uninitialized.

I suspect this hasn't been observed for the VOMS provider because
all VOMS server implementations create at least one group; hence
this case is never hit.

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