[llvm] [BOLT][DWARF][NFC] Refactor address writers (PR #98094)

[Alexander Yermolovich via llvm-commits]

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@@ -505,22 +511,18 @@ void DebugAddrWriterDwarf5::update(DIEBuilder &DIEBlder, DWARFUnit &CU) {
   DWARFDebugAddrTable AddrTable;
   DIDumpOptions DumpOpts;
   constexpr uint32_t HeaderSize = 8;
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ayermolo wrote:

Extract this to class level so you can also use it in DebugAddrWriterDwarf5::updateAddrBase instead of doing + 8.

https://github.com/llvm/llvm-project/pull/98094