ipw2100: remove a redundant NULL check before calling release_firmware()

The release_firmware() function does its own NULL test so a test
before calling it is rather redundant.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ipw2x00/ipw2100.c

@@ -8508,8 +8508,7 @@ static void ipw2100_release_firmware(struct ipw2100_priv *priv,
 				     struct ipw2100_fw *fw)
 {
 	fw->version = 0;
-	if (fw->fw_entry)
-		release_firmware(fw->fw_entry);
+	release_firmware(fw->fw_entry);
 	fw->fw_entry = NULL;
 }