staging: wilc1000: set_channel: fix data type of s32Error

This patch changes data type of s32Error variable from s32 to int
because return type of this function is int.
Signed-off-by: NChaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/wilc_wfi_cfgoperations.c

@@ -663,7 +663,7 @@ static int set_channel(struct wiphy *wiphy,
 {
 	u32 channelnum = 0;
 	struct wilc_priv *priv;
-	s32 s32Error = 0;
+	int s32Error = 0;
 
 	priv = wiphy_priv(wiphy);