V4L/DVB (11226): avoid warnings for request_ihex_firmware on dabusb and vicam

drivers/media/video/usbvideo/vicam.c: In function ‘vicam_open’:
drivers/media/video/usbvideo/vicam.c:194: warning: ‘fw’ may be used uninitialized in this function
drivers/media/video/dabusb.c: In function ‘dabusb_probe’:
drivers/media/video/dabusb.c:337: warning: ‘fw’ may be used uninitialized in this function

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/dabusb.c

@@ -334,7 +334,7 @@ static int dabusb_loadmem (pdabusb_t s, const char *fname)
 {
 	int ret;
 	const struct ihex_binrec *rec;
-	const struct firmware *fw;
+	const struct firmware *uninitialized_var(fw);
 
 	dbg("Enter dabusb_loadmem (internal)");
 

drivers/media/video/usbvideo/vicam.c

@@ -191,7 +191,7 @@ initialize_camera(struct vicam_camera *cam)
 {
 	int err;
 	const struct ihex_binrec *rec;
-	const struct firmware *fw;
+	const struct firmware *uninitialized_var(fw);
 
 	err = request_ihex_firmware(&fw, "vicam/firmware.fw", &cam->udev->dev);
 	if (err) {