tree eac6299dd15f1fba7ee8969b25b21d956af07fbe
parent 563841ef1447c161cfd97ab513549c644cab055d
author Bill Fenner <fenner@gmail.com> 1653590503 -0700
committer Guy Harris <gharris@sonic.net> 1661647200 -0700

Close the eventfd if we are non-blocking

The eventfd is used to break out of a poll() before it
times out, used by pcap_breakloop().  If we are non-blocking,
then the eventfd is never needed, so we close it.  (And
open a new eventfd if we switch to blocking).

(cherry picked from commit 024fd9717d43835f3e08b3146714532768910d3c)