[Lldb-commits] [lldb] [lldb] Upgrade `GetIndexOfChildWithName` to use `llvm::Expected` (PR #136693)

[Michael Buch via lldb-commits]

================
@@ -20,9 +20,12 @@ class QueueFrontEnd : public SyntheticChildrenFrontEnd {
     Update();
   }
 
-  size_t GetIndexOfChildWithName(ConstString name) override {
-    return m_container_sp ? m_container_sp->GetIndexOfChildWithName(name)
-                          : UINT32_MAX;
+  llvm::Expected<size_t> GetIndexOfChildWithName(ConstString name) override {
+    if (m_container_sp) {
+      return m_container_sp->GetIndexOfChildWithName(name);
+    }
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Michael137 wrote:

```suggestion
    if (m_container_sp)
      return m_container_sp->GetIndexOfChildWithName(name);
```

https://github.com/llvm/llvm-project/pull/136693