[llvm-branch-commits] [FlowSensitive] Allow callback to initialize storagelocations (PR #164675)

[Florian Mayer via llvm-branch-commits]

https://github.com/fmayer created https://github.com/llvm/llvm-project/pull/164675

This is useful to make sure that a newly created StorageLocation always
has e.g. an uninitialized boolean.