staging: wlan-ng: prism2mgmt.c: Drop void pointer cast

Void pointers don't need to be cast to other pointer types.
Semantic patch used:

@r@
expression x;
void* e;
type T;
identifier f;
@@

(
  *((T *)e)
|
  ((T *)x) [...]
|
  ((T *)x)->f
|
- (T *)
  e
)

Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wlan-ng/prism2mgmt.c

@@ -375,7 +375,7 @@ int prism2mgmt_scan_results(wlandevice_t *wlandev, void *msgp)
 
 	int count;
 
-	req = (struct p80211msg_dot11req_scan_results *) msgp;
+	req = msgp;
 
 	req->resultcode.status = P80211ENUM_msgitem_status_data_ok;