Fix cut and paste error. Use correct types.
Merge pull request #2344 from wmtan/FixLongLongBug

FWCore/Utilities Fixes -- Fix bug that prevents putting a long long or unsigned long long into an event.
Merge remote branch 'origin/CMSSW_7_0_X' into CMSSW_7_0_X
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X