[PATCH v2] wireless/nl80211.c: fix uninitialized variable

[Alaa Emad]

This change fix  KMSAN uninit-value in net/wireless/nl80211.c:225 , That
because of `fixedlen` variable uninitialized,So I initialized it by zero.

Reported-by: syzbot+72b99dcf4607e8c770f3@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Alaa Emad <alaaemadhossney.ae@xxxxxxxxx>
---
Changes in v2:
  - Make the commit message more clearer.
---
 net/wireless/nl80211.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 775d0c4d86c3..b87ab67ad33d 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -210,7 +210,7 @@ static int validate_beacon_head(const struct nlattr *attr,
 	const struct element *elem;
 	const struct ieee80211_mgmt *mgmt = (void *)data;
 	bool s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
-	unsigned int fixedlen, hdrlen;
+	unsigned int fixedlen = 0, hdrlen;
 
 	if (s1g_bcn) {
 		fixedlen = offsetof(struct ieee80211_ext,
-- 
2.25.1