V4L/DVB (10248): v4l-dvb: fix a bunch of compile warnings.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/usbvision/usbvision-i2c.c b/drivers/media/video/usbvision/usbvision-i2c.c
index 9907b9a..6b66ae4 100644
--- a/drivers/media/video/usbvision/usbvision-i2c.c
+++ b/drivers/media/video/usbvision/usbvision-i2c.c
@@ -157,7 +157,7 @@
 	struct i2c_msg *pmsg;
 	struct usb_usbvision *usbvision;
 	int i, ret;
-	unsigned char addr;
+	unsigned char addr = 0;
 
 	usbvision = (struct usb_usbvision *)i2c_get_adapdata(i2c_adap);