bug in testLinkedList.cpp

linkedList.h better than std::list but NOT that much better.
Look at diffs for test/testLinkedListAux for bug:

test/testTimerAux

@@ -1,6 +1,6 @@
-one requested 0.400000  diff 0.400227 seconds
-two requested 0.200000  diff 0.200181 seconds
-one requested 0.200000  diff 0.200259 seconds
-two requested 0.400000  diff 0.400413 seconds
-one requested 0.000000  diff 0.000058 seconds
-two requested 0.000000  diff 0.000082 seconds
+one requested 0.400000  diff 0.400214 seconds
+two requested 0.200000  diff 0.200183 seconds
+one requested 0.200000  diff 0.200328 seconds
+two requested 0.400000  diff 0.400277 seconds
+one requested 0.000000  diff 0.000038 seconds
+two requested 0.000000  diff 0.000060 seconds