[clang] [CodeGen] Fix handling of nullptr in initializers (PR #137364)

[Alexander Kornienko via cfe-commits]

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@@ -121,6 +121,7 @@ CAST_OPERATION(FunctionToPointerDecay)
 /// CK_NullToPointer - Null pointer constant to pointer, ObjC
 /// pointer, or block pointer.
 ///   (void*) 0
+///   (void*) nullptr
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alexfh wrote:

@efriedma-quic I'll land the fix now. Please let me know, if the comment on CK_NullToPointer needs to be revised.

https://github.com/llvm/llvm-project/pull/137364