Noticed looking for other occasion to replace __try/__catch with RAII 
helper.

     libstdc++: [_Hashtable] Add missing node destructor call

     libstdc++-v3/ChangeLog:

             * include/bits/hashtable_policy.h
             (_Hashtable_alloc<>::_M_allocate_node): Add missing call to 
node destructor
             on construct exception.

Tested under Linux x64, ok to commit ?

I hope gmail appli will appreciate .diff instead of .patch. .txt are not 
in .gitignore so annoying to use for patches.

François