TESTS: read12/read16 change signature to return an optional task structure

Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>

test-tool/test_sanitize_reset.c

@@ -106,7 +106,7 @@ test_sanitize_reset(void)
 
 	logging(LOG_VERBOSE, "Verify that READ16 fails with "
 		"SANITIZE_IN_PROGRESS");
-	ret = read16(sd, 0, block_size,
+	ret = read16(sd, NULL, 0, block_size,
 		     block_size, 0, 0, 0, 0, 0, NULL,
 		     EXPECT_SANITIZE);
 	CU_ASSERT_EQUAL(ret, 0);