typhoon: get rid of redundant conditional before all to release_firmware()

There's no need to test for a NULL pointer before calling
release_firmware() since the function does that check itself, so
remove the redundant test.
Signed-off-by: NJesper Juhl <jj@chaosbits.net>
Acked-by: NDavid Dillow <dave@thedillows.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

drivers/net/ethernet/3com/typhoon.c

@@ -2549,8 +2549,7 @@ typhoon_init(void)
 static void __exit
 typhoon_cleanup(void)
 {
-	if (typhoon_fw)
-		release_firmware(typhoon_fw);
+	release_firmware(typhoon_fw);
 	pci_unregister_driver(&typhoon_driver);
 }