[clang] [clang][analyzer] CallAndMessage warnings at pointer to uninitialized struct (PR #164600)

[Balázs Kéri via cfe-commits]

balazske wrote:

I was waiting with the merge because the new check can produce incorrect results for functions where it is enough to initialize a part of an input structure (there can be relatively many of these). Now a new option was added to require totally un-initialized structs to emit the warning.

https://github.com/llvm/llvm-project/pull/164600