iwlwifi: remove redundant initialization of final_mode

Problem identified by Miguel Botón <mboton.lkml@gmail.com>, alternate
solution suggested by Zhu Yi <yi.zhu@intel.com>, patch by me. :-)

Cc: Miguel Botón <mboton.lkml@gmail.com>
Cc: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -2139,7 +2139,7 @@ static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
 
 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
 {
-	u32 final_mode = mode;
+	u32 uninitialized_var(final_mode);
 	int rc;
 	struct iwl3945_powertable_cmd cmd;
 

drivers/net/wireless/iwlwifi/iwl4965-base.c

@@ -2218,7 +2218,7 @@ static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
 
 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
 {
-	u32 final_mode = mode;
+	u32 uninitialized_var(final_mode);
 	int rc;
 	struct iwl4965_powertable_cmd cmd;