bc26adcc32
Adds a lock to protect the sm pending_sends list from concurrent access Fixes bug where btl_sm_process_pending_sends would return an item to the free list and then continue to use it for a little while cmr:v1.6 This commit was SVN r25878. The following Trac tickets were found above: Ticket 2998 --> https://svn.open-mpi.org/trac/ompi/ticket/2998