[PATCH] fix typo in acpi video brightness changes.

Prevent possible null dereference due to misplaced ;
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/acpi/video.c

@@ -1645,7 +1645,7 @@ static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
 			printk(KERN_WARNING PREFIX
 			       "hhuuhhuu bug in acpi video driver.\n");
 
-		if (data->brightness);
+		if (data->brightness)
 			kfree(data->brightness->levels);
 		kfree(data->brightness);
 		kfree(data);