Avoid dropping ctrl_iface on ENOBUFS error burst

These bursts can result in control interface monitors being detached
even if the external program is still working properly. Use much larger
error threshold for ENOBUFS to avoid this.

wpa_supplicant/ctrl_iface_unix.c

@@ -525,7 +525,9 @@ static void wpa_supplicant_ctrl_iface_send(struct ctrl_iface_priv *priv,
 					   "%d - %s",
 					   idx, errno, strerror(errno));
 				dst->errors++;
-				if (dst->errors > 10 || _errno == ENOENT) {
+				if (dst->errors > 1000 ||
+				    (_errno != ENOBUFS && dst->errors > 10) ||
+				    _errno == ENOENT) {
 					wpa_supplicant_ctrl_iface_detach(
 						priv, &dst->addr,
 						dst->addrlen);