wl3501_cs: remove pedantic build warning

drivers/net/wireless/wl3501_cs.c: In function ‘wl3501_esbq_exec’:
drivers/net/wireless/wl3501_cs.c:387: warning: ‘tmp’ is used uninitialized in this function
drivers/net/wireless/wl3501_cs.c:384: note: ‘tmp’ was declared here

Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl3501_cs.c

@@ -381,7 +381,7 @@ static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 
 static int wl3501_esbq_req_test(struct wl3501_card *this)
 {
-	u8 tmp;
+	u8 tmp = 0;
 
 	wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 	return tmp & 0x80;