[Bug libstdc++/54185] condition_variable not properly destructed

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54185

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-08-12 16:22:28 UTC ---
I need a ChangeLog entry before I can commit the change, which needs your name,
could you provide a ChangeLog entry?  Thanks.

Unless I'm mistaken the volatile qualifiers in the testcase don't serve any
purpose, so I've removed them from the patch I plan to commit.  I have seen it
fail, but can't make it fail now, but I think it's useful to commit anyway.