[llvm] [SimplifyCFG] Use nullptr instead of 0 in a comment. NFC (PR #174262)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: Craig Topper (topperc)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/174262.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/Utils/SimplifyCFG.cpp (+2-2) 


``````````diff
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index 2a957737697c3..3cb3018a70559 100644
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -6377,8 +6377,8 @@ constantFold(Instruction *I, const DataLayout &DL,
 
 /// Try to determine the resulting constant values in phi nodes
 /// at the common destination basic block, *CommonDest, for one of the case
-/// destionations CaseDest corresponding to value CaseVal (0 for the default
-/// case), of a switch instruction SI.
+/// destinations CaseDest corresponding to value CaseVal (nullptr for the
+/// default case), of a switch instruction SI.
 static bool
 getCaseResults(SwitchInst *SI, ConstantInt *CaseVal, BasicBlock *CaseDest,
                BasicBlock **CommonDest,

``````````

</details>


https://github.com/llvm/llvm-project/pull/174262