libertas: fix use-before-check violation

[PATCH] fix use-before-check violation

According to Coverity (kudo's to Adrian Bunk), we had one use-before-check bug in libe libertas driver. This patch fixes this issue.

Signed-off-by Holger Schurig <[email protected]>

Index: wireless-testing/drivers/net/wireless/libertas/scan.c
===================================================================

drivers/net/wireless/libertas/scan.c +2 -1

@@ -298,7 +298,8 @@ static int lbs_do_scan(struct lbs_privat
 	uint8_t *tlv;	/* pointer into our current, growing TLV storage area */
 
 	lbs_deb_enter_args(LBS_DEB_SCAN, "bsstype %d, chanlist[].chan %d, chan_count %d",
-			   bsstype, chan_list[0].channumber, chan_count);
+		bsstype, chan_list ? chan_list[0].channumber : -1,
+		chan_count);
 
 	/* create the fixed part for scan command */
 	scan_cmd = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL);