staging: r8188eu: mark rtw_is_desired_network as bool

Mark rtw_is_desired_network as bool as it returns true/false.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vihas Makwana <makvihas@gmail.com>
Link: https://lore.kernel.org/r/20220302204737.49056-4-makvihas@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme.c

@@ -571,7 +571,7 @@ static void rtw_add_network(struct adapter *adapter,
 /* 			(3) WMM */
 /*			(4) HT */
 /*			(5) others */
-static int rtw_is_desired_network(struct adapter *adapter, struct wlan_network *pnetwork)
+static bool rtw_is_desired_network(struct adapter *adapter, struct wlan_network *pnetwork)
 {
 	struct security_priv *psecuritypriv = &adapter->securitypriv;
 	struct mlme_priv *pmlmepriv = &adapter->mlmepriv;