staging: wlan-ng: Drop void pointer cast

Void pointers need not 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/prism2mib.c

@@ -379,7 +379,7 @@ static int prism2mib_bytearea2pstr(struct mibrec *mib,
 				   void *data)
 {
 	int result;
-	p80211pstrd_t *pstr = (p80211pstrd_t *) data;
+	p80211pstrd_t *pstr = data;
 	u8 bytebuf[MIB_TMP_MAXLEN];
 
 	if (isget) {