Fix one instance of getLast()->getFrame()

test/gtest_processor_odom_icp.cpp

@@ -151,7 +151,7 @@ TEST_F(ProcessorOdomIcp_Test, full)
         scan->process();
 
         // F = problem->getLastFrame();
-        F = processor->getLast()->getFrame();
+        F = processor->getLastFrame();
 
         WOLF_TRACE("last capture ", processor->getOrigin()->id() ,
                    " - features: ", processor->getOrigin()->getFeatureList().size());