bpo-33532: Fix test_multiprocessing_forkserver.test_ignore() (GH-7319)


Use also support.SOCK_MAX_SIZE, not only support.PIPE_MAX_SIZE, to
get the size for a blocking send into a multiprocessing pipe.
(cherry picked from commit 252f6abe0a9430f4ae7588c0cb50a6ff141bebe3)

Co-authored-by: Victor Stinner <vstinner@redhat.com>
1 file changed