[lldb] [llvm] [LLDB][Minidump] Add 64b support to LLDB's minidump file builder. (PR #95312)

[Jacob Lalonde via llvm-commits]

Jlalond wrote:

@petrhosek because it's just going to be a change to something like `size_t`, would you mind if I just did a quick commit to fix this and assign you as the reviewer? 

https://github.com/llvm/llvm-project/pull/95312