[llvm] [CodeGen] Distinguish zero-sized call frames from no call frame in MachineBB (PR #106964)

[Fabian Ritter via llvm-commits]

ritter-x2a wrote:

* **#106965** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/106965?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#106964** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/106964?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a> 👈
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https://github.com/llvm/llvm-project/pull/106964