[llvm] [SimplifyCFG] Fix hoisting problem in SimplifyCFG (PR #78615)

[Quentin Dian via llvm-commits]

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@@ -1552,10 +1562,21 @@ bool SimplifyCFGOpt::hoistCommonCodeFromSuccessors(BasicBlock *BB,
 
   auto *TI = BB->getTerminator();
 
+  SmallVector<BasicBlock *> SuccessorBlocks;
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DianQK wrote:

```suggestion
  SmallVector<BasicBlock *> SuccessorBBs;
```

https://github.com/llvm/llvm-project/pull/78615