Fix error where a parameter was set for the wrong config

@davidlange6 found this bug that was making the GSF electron sequence crash intermittently.  Eventually came down to a decision being made in [RecoEgamma/EgammaElectronAlgos/src/ElectronHcalHelper.cc line 22](https://github.com/cms-sw/cmssw/blob/CMSSW_6_2_X_SLHC/RecoEgamma/EgammaElectronAlgos/src/ElectronHcalHelper.cc#L22) whether to create a new object but the variable in the "if" statement was uninitialised.  Turned out to be this typo.

When fixing it, also need to add the correct parameter to the gsfElectrons config.