Fix some places where the workaround for missing ConstructedAt method

for older ROOT version wasn't working.

src/THcDriftChamberPlane.cxx

@@ -13,6 +13,7 @@
 #include "THcParmList.h"
 #include "THcHitList.h"
 #include "THcDriftChamber.h"
+#include "TClass.h"
 
 #include <cstring>
 #include <cstdio>
@@ -32,6 +33,9 @@ THcDriftChamberPlane::THcDriftChamberPlane( const char* name,
 {
   // Normal constructor with name and description
   fTDCHits = new TClonesArray("THcSignalHit",100);
+#if ROOT_VERSION_CODE < ROOT_VERSION(5,32,0)
+  fTDCHitsClass = fTDCHits->GetClass();
+#endif
   fPlaneNum = planenum;
 }
 

src/THcDriftChamberPlane.h

@@ -44,6 +44,8 @@ class THcDriftChamberPlane : public THaSubDetector {
 
   TClonesArray* fTDCHits;
 
+  TClass* fTDCHitsClass;
+
   Int_t fPlaneNum;
 
   virtual Int_t  ReadDatabase( const TDatime& date );

src/THcShowerPlane.cxx

@@ -185,7 +185,7 @@ if(hit->fADC_pos >  0) {
 	THcSignalHit *sighit = (THcSignalHit*) fPosADCHits->ConstructedAt(nPosADCHits++);
 	sighit->Set(hit->fCounter, hit->fADC_pos);
 #else
-	TObject* obj = (*fPosTDCHits)[nPosADCHits++];
+	TObject* obj = (*fPosADCHits)[nPosADCHits++];
 	R__ASSERT( obj );
 if(!obj->TestBit (TObject::kNotDeleted))
 	fPosADCHitsClass->New(obj);
@@ -199,7 +199,7 @@ if(hit->fADC_neg >  0) {
 	THcSignalHit *sighit = (THcSignalHit*) fNegADCHits->ConstructedAt(nNegADCHits++);
 	sighit->Set(hit->fCounter, hit->fADC_neg);
 #else
-	TObject* obj = (*fPosTDCHits)[nNegADCHits++];
+	TObject* obj = (*fPosADCHits)[nNegADCHits++];
 	R__ASSERT( obj );
 if(!obj->TestBit (TObject::kNotDeleted))
 	fNegADCHitsClass->New(obj);