Fix warning (#209)

Author: Barthelemy

Framework/test/testWorkflow.cxx

@@ -38,7 +38,7 @@ WorkflowSpec defineDataProcessing(ConfigContext const&)
     Outputs{
       { { "tst-data" }, "TST", "DATA" } },
     AlgorithmSpec{
-      [](ProcessingContext& pctx) {
+      [](ProcessingContext& /*pctx*/) {
         usleep(100000);
 //        auto data = pctx.outputs().make<int>(OutputRef{ "tst-data" }, 1);
       } }