[Bug libstdc++/50862] deadlock in std::condition_variable_any

[bartosz.szurgot at pwr dot wroc.pl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50862

--- Comment #1 from basz <bartosz.szurgot at pwr dot wroc.pl> 2011-10-25 10:28:09 UTC ---
Created attachment 25611
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25611
patch fixing the problem

unlocking local mutex, before locking back user's lock solves the problem.