Add default value for offset

Author: DrSergei

lldb/tools/lldb-dap/EventHelper.cpp

@@ -292,7 +292,6 @@ void SendMemoryEvent(DAP &dap, lldb::SBValue variable) {
     return;
   protocol::MemoryEventBody body;
   body.memoryReference = addr;
-  body.offset = 0;
   body.count = variable.GetByteSize();
   dap.Send(protocol::Event{"memory", std::move(body)});
 }

lldb/tools/lldb-dap/Protocol/ProtocolEvents.h

@@ -109,7 +109,7 @@ struct MemoryEventBody {
   lldb::addr_t memoryReference;
 
   /// Starting offset in bytes where memory has been updated. Can be negative.
-  int64_t offset;
+  int64_t offset = 0;
 
   /// Number of bytes updated.
   uint64_t count;