test tool: Set BYTCHK=1 if EDTL != 0

From SBC-4: BYTCHK = 0 means that the Data-Out buffer contents
must not be used. BYTCHK = 1 means that the Data-Out buffer must
be compared against the data on the storage medium. Hence set
BYTCHK to 1 if EDTL != 0.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>

test-tool/test_writeverify16_residuals.c

@@ -53,7 +53,7 @@ test_writeverify16_residuals(void)
         }
 
         /* check if writeverify16 is supported */
-        WRITEVERIFY16(sd, 0, 0, block_size, 0, 0, 0, 0, NULL,
+        WRITEVERIFY16(sd, 0, 0, block_size, 0, 0, 1, 0, NULL,
                       EXPECT_STATUS_GOOD);
 
         if (sd->iscsi_ctx == NULL) {