[RIFT 16413, 16414] Unittest failures fixed for utest_package, utest_publisher_dts

Signed-off-by: sinhan <nandan.sinha@riftio.com>
diff --git a/rwlaunchpad/plugins/rwlaunchpadtasklet/rift/package/package.py b/rwlaunchpad/plugins/rwlaunchpadtasklet/rift/package/package.py
index b416281..2859b1b 100644
--- a/rwlaunchpad/plugins/rwlaunchpadtasklet/rift/package/package.py
+++ b/rwlaunchpad/plugins/rwlaunchpadtasklet/rift/package/package.py
@@ -613,7 +613,7 @@
                 archive_checksums = checksums.ArchiveChecksums.from_file_desc(checksum_hdl)
         except (FileNotFoundError, PackageError) as e:
             self._log.warning("Could not open package checksum file.  Not validating checksums.")
-            return validated_file_checksums
+            return self.validated_file_checksums
 
         for pkg_file in package.files:
             if pkg_file == checksum_file: