[llvm] [llvm][llvm-dis] Fix 'llvm-dis' with '--materialize-metadata --show-annotations' crashes (PR #164819)

[Matt Arsenault via llvm-commits]

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@@ -263,9 +263,6 @@ bool Value::isUsedInBasicBlock(const BasicBlock *BB) const {
 }
 
 unsigned Value::getNumUses() const {
-  // TODO: Disallow for ConstantData and remove !UseList check?
-  if (!UseList)
-    return 0;
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arsenm wrote:

This should probably be a separate change, I don't see the connection here 

https://github.com/llvm/llvm-project/pull/164819