[PATCH] Add explicit NULL check before accessing data pointer

[De Cesco, Jonathan]

Android private lib for nl80211 driver is sending
wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, NULL);
For this event, data pointer validity is not checked before access.

Signed-off-by: Jonathan DE CESCO <jonathan.de.cesco at intel.com>
---
 wpa_supplicant/events.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 4e84f6e..8cf2dd9 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -3369,8 +3369,9 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 		wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
 		break;
 	case EVENT_CHANNEL_LIST_CHANGED:
-		wpa_supplicant_update_channel_list(
-			wpa_s, &data->channel_list_changed);
+		if (data)
+			wpa_supplicant_update_channel_list(
+						wpa_s, &data->channel_list_changed);
 		break;
 	case EVENT_INTERFACE_UNAVAILABLE:
 		wpas_p2p_interface_unavailable(wpa_s);
-- 
1.7.9.5

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