Ensure to properly DESTRUCT ompi_registered_datareps. This fixes the

second part of #1472 (fixes trac:1472).

This commit was SVN r19466.

The following Trac tickets were found above:
  Ticket 1472 --> https://svn.open-mpi.org/trac/ompi/ticket/1472

ompi/runtime/ompi_mpi_finalize.c

@@ -163,6 +163,7 @@ int ompi_mpi_finalize(void)
     while (NULL != (item = opal_list_remove_first(&ompi_registered_datareps))) {
         OBJ_RELEASE(item);
     }
+    OBJ_DESTRUCT(&ompi_registered_datareps);
 
     /* Remove all F90 types from the hash tables. As the OBJ_DESTRUCT will
      * call a special destructor able to release predefined types, we can