media: vicodec: add missing v4l2_ctrl_request_hdl_put()

The check for a required control in the request was missing a call to
v4l2_ctrl_request_hdl_put(), so the control request object was never
released.

Signed-off-by: Hans Verkuil <[e-mail]>
Fixes: 997deb811bf5 ("media: vicodec: Add support for stateless decoder.")
Reviewed-by: Ezequiel Garcia <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/test-drivers/vicodec/vicodec-core.c

···
 	}
 	ctrl = v4l2_ctrl_request_hdl_ctrl_find(hdl,
 					       vicodec_ctrl_stateless_state.id);
+	v4l2_ctrl_request_hdl_put(hdl);
 	if (!ctrl) {
 		v4l2_info(&ctx->dev->v4l2_dev,
 			  "Missing required codec control\n");