llvm-project

d3fd7921 - Clarify some code based on static analysis complaints; NFC (#145679)

Clarify some code based on static analysis complaints; NFC (#145679) In one case, we have a null pointer check that's unnecessary because the only caller of the function already asserts the value is non-null. In the other case, we've got an anti-pattern of `is` followed by `get`. The logic was easier to repair by changing `get` to `cast`. Neither case is a functional change. Fixes #145525