[bug #68552] [troff] memory corruption in `token::description()` in `TOKEN_NODE` case

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Update of bug #68552 (group groff):=0A=0A                  Status:         =
      Confirmed =3D> In Progress=0A         Planned Release:               =
     None =3D> 1.25.0=0A                 Summary: [troff] double-free via `=
exit()` in=0A`write_any_trailer_and_exit()` using Clang on Termux =3D> [tro=
ff] memory=0Acorruption in `token::description()` in `TOKEN_NODE` case=0A=
=0A    _______________________________________________________=0A=0AFollow-=
up Comment #4:=0A=0ABreaking the code freeze for this.  Updating summary.  =
More details to come.=0A=0A=0A    _________________________________________=
______________=0A=0AReply to this item at:=0A=0A  <https://savannah.gnu.org=
/bugs/?68552>=0A=0A_______________________________________________=0AMessag=
e sent via Savannah=0Ahttps://savannah.gnu.org/=0A
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