[llvm] Fix crash when alloc functions are missing `alloc-family` (PR #138310)

[Nikita Popov via llvm-commits]

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@@ -3302,14 +3302,16 @@ static bool isAllocSiteRemovable(Instruction *AI,
 
         if (getFreedOperand(cast<CallBase>(I), &TLI) == PI &&
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nikic wrote:

I'd prefer to add a `Family &&` here. No need to do the other checks if we don't have an allocation family in the first place.

https://github.com/llvm/llvm-project/pull/138310