Fix build failure in boot_image_sdk_test.go

Test: m nothing
Change-Id: I1f386fe4119ac9c3efc8d046142d02862af5fd99
diff --git a/sdk/boot_image_sdk_test.go b/sdk/boot_image_sdk_test.go
index b4c227f..915253d 100644
--- a/sdk/boot_image_sdk_test.go
+++ b/sdk/boot_image_sdk_test.go
@@ -29,7 +29,7 @@
 		}
 	`)
 
-	result.CheckSnapshot("mysdk", "",
+	CheckSnapshot(result, "mysdk", "",
 		checkUnversionedAndroidBpContents(`
 // This is auto-generated. DO NOT EDIT.