If there are no BTLs, do ''not'' actually shut down the fd listener,

because a) it may still be needed to shut down the CPCs, and b) it
will be shut down during component_close().

This commit was SVN r28402.

ompi/mca/btl/openib/btl_openib_component.c

@@ -2886,9 +2886,6 @@ btl_openib_component_init(int *num_btl_modules,
     /* If we fail early enough in the setup, we just modex around that
        there are no openib BTL's in this process and return NULL. */
 
-    /* Be sure to shut down the fd listener */
-    ompi_btl_openib_fd_finalize();
-
     mca_btl_openib_component.ib_num_btls = 0;
     btl_openib_modex_send();
 #if BTL_OPENIB_MALLOC_HOOKS_ENABLED