Update GPUChainITS.cxx

Author: f3sch

GPU/GPUTracking/Global/GPUChainITS.cxx

@@ -30,11 +30,11 @@ class GPUFrameworkExternalAllocator final : public o2::its::ExternalAllocator
     return mFWReco->AllocateDirectMemory(size, mType);
   }
   void deallocate(char* ptr, size_t size) final {} // this is a simple no-op
-  void pushTagOnStack(uint64_t tag)
+  void pushTagOnStack(uint64_t tag) final
   {
     mFWReco->PushNonPersistentMemory(tag);
   }
-  void popTagOffStack(uint64_t tag)
+  void popTagOffStack(uint64_t tag) final
   {
     mFWReco->PopNonPersistentMemory(GPUDataTypes::RecoStep::ITSTracking, tag);
   }
@@ -45,8 +45,6 @@ class GPUFrameworkExternalAllocator final : public o2::its::ExternalAllocator
 };
 } // namespace o2::its
 
-GPUChainITS::~GPUChainITS() {}
-
 GPUChainITS::GPUChainITS(GPUReconstruction* rec) : GPUChain(rec) {}
 
 int32_t GPUChainITS::Init() { return 0; }