Fix in the number of priors initialised for AliPID
https://alicoverity.cern.ch:8443/sourcebrowser.htm?projectId=10001#mergedDefectId=11329
Double_t lPriorsGuessXi [AliPID::kSPECIESCN] = {0, 0, 2, 0, 1, 0,0,0,0};
Double_t lPriorsGuessOmega[AliPID::kSPECIESCN] = {0, 0, 1, 1, 1, 0,0,0,0};
// If the boolean for charged option is activated in AliPID::SetPriors, only the first 9 double_t in the array are read anyway.
// But Coverity sniffs an issue (a priori, previous implementation was safe but the logic is a bit twisted; Coverity is not totally wrong).
// Use AliPID::kSPECIESCN (=14) is size of the array + initialise what I am interested in (charged particle = 9 first particles)
// The rest of the table will be initialised to 0 anyway.