[analyzer] MacOSKeychainAPIChecker: Add reasoning about functions which MIGHT deallocate the memory region allocated with SecKeychain APIs. Specifically, when the buffer is passed to CFStringCreateWithBytesNoCopy along with a custom deallocator, which might potentially correctly release the memory.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138417 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed