staging: r8188eu: Remove set but unused variables

Remove set but unused variables. Issues detected by sparse.
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210802010056.20543-1-fmdefrancesco@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme.c

@@ -748,7 +748,6 @@ void rtw_survey_event_callback(struct adapter	*adapter, u8 *pbuf)
 void rtw_surveydone_event_callback(struct adapter	*adapter, u8 *pbuf)
 {
 	struct	mlme_priv *pmlmepriv = &(adapter->mlmepriv);
-	struct mlme_ext_priv *pmlmeext;
 	u8 timer_cancelled = 0;
 
 	spin_lock_bh(&pmlmepriv->lock);
@@ -843,9 +842,6 @@ void rtw_surveydone_event_callback(struct adapter	*adapter, u8 *pbuf)
 		p2p_ps_wk_cmd(adapter, P2P_PS_SCAN_DONE, 0);
 
 	rtw_os_xmit_schedule(adapter);
-
-	pmlmeext = &adapter->mlmeextpriv;
-
 }
 
 void rtw_dummy_event_callback(struct adapter *adapter, u8 *pbuf)

drivers/staging/r8188eu/os_dep/osdep_service.c

@@ -397,7 +397,7 @@ void rtw_buf_free(u8 **buf, u32 *buf_len)
 
 void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
 {
-	u32 ori_len = 0, dup_len = 0;
+	u32 dup_len = 0;
 	u8 *ori = NULL;
 	u8 *dup = NULL;
 
@@ -416,7 +416,6 @@ void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
 
 keep_ori:
 	ori = *buf;
-	ori_len = *buf_len;
 
 	/* replace buf with dup */
 	*buf_len = 0;