fix memory leaks

src/common/variable-tracer-test.cc

@@ -212,6 +212,8 @@ VariableTracerTest::RunUnsignedTests (void)
   utmp &= 1;
   utmp |= 1;
   utmp ^= 1;
+
+  delete foo;
 }
 
 void

src/simulator/simulator.cc

@@ -638,7 +638,9 @@ SimulatorTests::RunTests (void)
   Simulator::ScheduleDestroy (&SimulatorTests::bar3, this, 0, 0, 0);
   Simulator::ScheduleDestroy (&SimulatorTests::bar4, this, 0, 0, 0, 0);
   Simulator::ScheduleDestroy (&SimulatorTests::bar5, this, 0, 0, 0, 0, 0);
-  
+
+  Simulator::Run ();
+  Simulator::Destroy ();
 
   return ok;
 }