CLEANUP: mux-h2: simply use h2s->flags instead of ret in h2_deferred_shut()

This one used to rely on the combined return statuses of the shutr/w
functions but now that we have the H2_SF_WANT_SHUT{R,W} flags we don't
need this anymore if we properly remove these flags after their operations
succeed. This is what this patch does.
1 file changed