Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: hsato03

plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/storage/LibvirtStorageAdaptor.java

@@ -1619,7 +1619,7 @@ to support snapshots(backuped) as qcow2 files. */
                         destFile = new QemuImgFile(destPath, destFormat);
                         try {
                             boolean isQCOW2 = PhysicalDiskFormat.QCOW2.equals(sourceFormat);
-                            qemu.convert(srcFile, destFile, null,  null, null, new QemuImageOptions(srcFile.getFormat(), srcFile.getFileName(), null),
+                            qemu.convert(srcFile, destFile, null, null, null, new QemuImageOptions(srcFile.getFormat(), srcFile.getFileName(), null),
                                     null, false, isQCOW2);
                             Map<String, String> destInfo = qemu.info(destFile);
                             Long virtualSize = Long.parseLong(destInfo.get(QemuImg.VIRTUAL_SIZE));