Fix various warnings.

algo/detectors/tof/HitFinderTof.cxx

@@ -35,14 +35,14 @@ namespace cbm::algo
     int32_t iTrafoCell = -1;
 
     // Last Channel Temp variables
-    int32_t lastChan = -1;
+    uint32_t lastChan = -1;
     double lastPosY  = 0.0;
     double lastTime  = 0.0;
 
     //reset counter
     numSameSide = 0;
 
-    for (int32_t chan = 0; chan < fParams.fChanPar.size(); chan++) {
+    for (uint32_t chan = 0; chan < fParams.fChanPar.size(); chan++) {
 
       std::vector<CbmTofDigi*>& storDigiExp = digisExp[chan];
       std::vector<int32_t>& storDigiInd     = digisInd[chan];