Out of line FairTBuffer destructor (#14265)

Author: ktf

Framework/Core/include/Framework/TMessageSerializer.h

@@ -40,6 +40,8 @@ class FairOutputTBuffer : public TBufferFile
     : TBufferFile(TBuffer::kWrite, msg.GetSize() - sizeof(char*), embedInItself(msg), false, fairMQrealloc)
   {
   }
+
+  ~FairOutputTBuffer() override;
   // Helper function to keep track of the FairMQ message that holds the data
   // in the data itself. We can use this to make sure the message can be reallocated
   // even if we simply have a pointer to the data. Hopefully ROOT will not play dirty
@@ -60,6 +62,7 @@ class FairInputTBuffer : public TBufferFile
     : TBufferFile(TBuffer::kRead, size - sizeof(char*), data + sizeof(char*), false, nullptr)
   {
   }
+  ~FairInputTBuffer() override;
 };
 
 struct TMessageSerializer {

Framework/Core/src/TMessageSerializer.cxx

@@ -15,6 +15,9 @@
 
 using namespace o2::framework;
 
+FairOutputTBuffer::~FairOutputTBuffer() = default;
+FairInputTBuffer::~FairInputTBuffer() = default;
+
 void* FairOutputTBuffer::embedInItself(fair::mq::Message& msg)
 {
   // The first bytes of the message are used to store the pointer to the message itself