Ported a test framework fix from master branch

src/plugins/streamers/oasis/unit_tests/dbOASISReaderTests.cc

@@ -595,6 +595,9 @@ TEST(Bug_1474)
     db::OASISReader reader (file);
     reader.read (layout);
     EXPECT_EQ (false, true);
+  } catch (tl::CancelException &ex) {
+    //  Seen when private test data is not installed
+    throw;
   } catch (tl::Exception &ex) {
     EXPECT_EQ (ex.msg (), "Cell named ADDHX2 with ID 4 was already given name SEDFFTRX2 (position=763169, cell=)");
   }