Fix comment in TestTestRunner.cpp
Fix comment in TestTestRunner.cpp

"Self-recursive" didn't make much sense.
grahamreeds/unittest-cpp,grahamreeds/unittest-cpp,grahamreeds/unittest-cpp,pjohnmeyer/unittest-cpp,pjohnmeyer/unittest-cpp,unittest-cpp/unittest-cpp,jasonhorsburgh/unittest-cpp,unittest-cpp/unittest-cpp,jasonhorsburgh/unittest-cpp,unittest-cpp/unittest-cpp