Fix some memory leaks in the tests

tests/thread/atomic.cpp

@@ -146,6 +146,7 @@ void AtomicTestCase::TestWithThreads(int count, ETestType testType)
         if ( thread->Create() != wxTHREAD_NO_ERROR )
         {
             wxLogError(wxT("Can't create thread!"));
+            delete thread;
         }
         else
             threads.Add(thread);
@@ -161,6 +162,7 @@ void AtomicTestCase::TestWithThreads(int count, ETestType testType)
     {
         // each thread should return 0, else it detected some problem
         CPPUNIT_ASSERT (threads[i]->Wait() == (wxThread::ExitCode)0);
+        delete threads[i];
     }
 
     CPPUNIT_ASSERT( int1 == 0 );

tests/thread/queue.cpp

@@ -130,6 +130,7 @@ void QueueTestCase::TestReceive()
         // if it returns a negative, then it detected some problem.
         wxThread::ExitCode code = threads[i]->Wait();
         CPPUNIT_ASSERT_EQUAL( code, (wxThread::ExitCode)wxMSGQUEUE_NO_ERROR );
+        delete threads[i];
     }
 }
 
@@ -162,6 +163,8 @@ void QueueTestCase::TestReceiveTimeout()
 
     CPPUNIT_ASSERT_EQUAL( code1, (wxThread::ExitCode)wxMSGQUEUE_NO_ERROR );
     CPPUNIT_ASSERT_EQUAL( code2, (wxThread::ExitCode)wxMSGQUEUE_TIMEOUT );
+    delete thread2;
+    delete thread1;
 }
 
 // every thread tries to read exactly m_maxMsgCount messages from its queue