ACPI: video: remove unneeded memsets

device->cap and video->cap are zeroed initially so we don't need to clear
them again.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/video.c

@@ -934,9 +934,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 {
 	acpi_handle h_dummy1;
 
-
-	memset(&device->cap, 0, sizeof(device->cap));
-
 	if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) {
 		device->cap._ADR = 1;
 	}
@@ -1039,7 +1036,6 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
 {
 	acpi_handle h_dummy1;
 
-	memset(&video->cap, 0, sizeof(video->cap));
 	if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) {
 		video->cap._DOS = 1;
 	}