[clang] [clang][ExtractAPI][NFC] pass params by const reference (PR #94820)

[Daniel Grumberg via cfe-commits]

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@@ -240,7 +241,7 @@ class DeclarationFragments {
 
 class AccessControl {
 public:
-  AccessControl(std::string Access) : Access(Access) {}
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daniel-grumberg wrote:

Again I would prefer if we kept the value semantic ones and use `std::move`

https://github.com/llvm/llvm-project/pull/94820