[lldb][NFCI] Refactor AppleObjCClassDescriptorV2 method_t parsing functions (#163291)

This rewrites ClassDescriptorV2::method_t::Read (and the loop calling
that function) in an NFCI way to perform a couple of things:

1. Cleanup code with indirect style. For example, the old loop would
have default-constructor a `unique_ptr<method_t>`, which was *reused* on
every iteration of the loop. It called `method_t::Read` on each
iteration, and never checked the return value prior to invoking the
callback. In other words, if `Read` failed, the callback was called on
random values.

2. Exposed memory reads that could benefit from the MultiMemoryRead
packet proposed in [1].

[1]:
https://discourse.llvm.org/t/rfc-a-new-vectorized-memory-read-packet/88441

0 files changed, 0 insertions, 0 deletions