staging/wlan-ng: use kzalloc rather using kmalloc at create_wlan

instead we would have used kzalloc, so our memory which is allocated will be set to 0.

codepath:

the code path here is prism2sta_probe_usb, calling when ever usb-dev id
and usb-vendor id e.t.c matches with what ever present in the MODULE_DEVICE_TABLE,

and in prism2sta_probe_usb , we call create_wlan, and its called nowhere else...
Signed-off-by: NDevendra Naga <devendra.aaru@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wlan-ng/prism2sta.c

@@ -1947,8 +1947,8 @@ static wlandevice_t *create_wlan(void)
 	hfa384x_t *hw = NULL;
 
 	/* Alloc our structures */
-	wlandev = kmalloc(sizeof(wlandevice_t), GFP_KERNEL);
-	hw = kmalloc(sizeof(hfa384x_t), GFP_KERNEL);
+	wlandev = kzalloc(sizeof(wlandevice_t), GFP_KERNEL);
+	hw = kzalloc(sizeof(hfa384x_t), GFP_KERNEL);
 
 	if (!wlandev || !hw) {
 		printk(KERN_ERR "%s: Memory allocation failure.\n", dev_info);
@@ -1957,10 +1957,6 @@ static wlandevice_t *create_wlan(void)
 		return NULL;
 	}
 
-	/* Clear all the structs */
-	memset(wlandev, 0, sizeof(wlandevice_t));
-	memset(hw, 0, sizeof(hfa384x_t));
-
 	/* Initialize the network device object. */
 	wlandev->nsdname = dev_info;
 	wlandev->msdstate = WLAN_MSD_HWPRESENT_PENDING;