staging: rtl8192u: Fix variable shadowing warning

Fixes the following sparse warnings:

drivers/staging/rtl8192u/r8192U_core.c:2306:21: warning: symbol 'i' shadows an earlier one
drivers/staging/rtl8192u/r8192U_core.c:2254:13: originally declared here
drivers/staging/rtl8192u/r8192U_core.c:2371:29: warning: symbol 'i' shadows an earlier one
drivers/staging/rtl8192u/r8192U_core.c:2254:13: originally declared here
Signed-off-by: Cláudio Maia <clrrm@isep.ipp.pt>
Link: https://lore.kernel.org/r/20210514230459.15752-1-clrrm@isep.ipp.ptSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/r8192U_core.c

@@ -2303,8 +2303,6 @@ static int rtl8192_read_eeprom_info(struct net_device *dev)
 	/* set channelplan from eeprom */
 	priv->ChannelPlan = priv->eeprom_ChannelPlan;
 	if (bLoad_From_EEPOM) {
-		int i;
-
 		for (i = 0; i < 6; i += 2) {
 			ret = eprom_read(dev, (u16)((EEPROM_NODE_ADDRESS_BYTE_0 + i) >> 1));
 			if (ret < 0)
@@ -2368,8 +2366,6 @@ static int rtl8192_read_eeprom_info(struct net_device *dev)
 			priv->EEPROM_Def_Ver = 1;
 		RT_TRACE(COMP_EPROM, "EEPROM_DEF_VER:%d\n", priv->EEPROM_Def_Ver);
 		if (priv->EEPROM_Def_Ver == 0) { /* old eeprom definition */
-			int i;
-
 			if (bLoad_From_EEPOM) {
 				ret = eprom_read(dev, (EEPROM_TX_PW_INDEX_CCK >> 1));
 				if (ret < 0)