Correction of a bug on the position of the second interaction in the Tracked...

Correction of a bug on the position of the second interaction in the Tracked Tree that was always a copy of the 1rst interaction

consumers/TreeBuilder/AGAPRO_TB_AGATA.cpp

@@ -743,10 +743,10 @@ void TB_AGATA_Tracking::Process(Int_t idet)
         trackZ1[i]          = gamma1->GetZ();
 
         //if tracked gamma is photo or pair, the second int point is a copy of the first one (because not useful)
-        if(trackType[i]==2){
-            trackX2[i]      = gamma1->GetX();
-            trackY2[i]      = gamma1->GetY();
-            trackZ2[i]      = gamma1->GetZ();
+        if ( gamma1->GetHit(1) ) {
+            trackX2[i] = gamma1->GetHit(1)->GetX();
+            trackY2[i] = gamma1->GetHit(1)->GetY();
+            trackZ2[i] = gamma1->GetHit(1)->GetZ();
         }
         else {
             trackX2[i]      = trackX1[i];