iwlwifi: fix compliation warnings

This patch fixes compilation warnings introduced by 'fix ucode assertion
for RX queue overrun' patch

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index bab42a1..c366ad5 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -4163,7 +4163,7 @@
 /*
  * this should be called while priv->lock is locked
  */
-void __iwl3945_rx_replenish(void *data)
+static void __iwl3945_rx_replenish(void *data)
 {
 	struct iwl3945_priv *priv = data;