bug fix for hits NAN: correction

Ciao,
in the post with the list of things to do to setup the machinery I wrote

# fix for NAN in particle time of flight
cvs co -r CMSSW_1_3_1 SimCalorimetry/CaloSimAlgos
edit SimCalorimetry/CaloSimAlgos/src/CaloHitResponse.cc
and add [see the head, in case] in 'run'
// check the hit time makes sense
if ( isnan(((*hitItr).time())) ) { continue; }

this is OK, but the head version CAN not be used, otherwise there are problems with the calo digitization. The checkout has to be done from HLT5, the head can only be taken as a reference to know where the fix has to be put.

Chiara