[clang] [Clang][ARM] Call constructor on BranchTargetInfo. (PR #98307)

[Sergei Barannikov via cfe-commits]

s-barannikov wrote:

IIRC there is a clang-tidy check that diagnoses uninitialized PODs, but probably making the constructor non-trivial is simpler.


https://github.com/llvm/llvm-project/pull/98307